Yo no era capaz de hacerlo funcionar hasta que en una pagina encontre esta solucion. A mi me va ahora asi que esto marcha. Esta en ingles. Si no te funciona dilo a er si entre todos te echamos una mano. No quiero despedirme sin dar gracias al niñogeo (un colega) por descubrirme este juegazo años antes de que yo tuviese un pc

Steve's XP Games Corner - Gabriel Knight: Sins of the Fathers (CD-ROM version)
By Steve Metzler (Last updated: 18th November, 2004)
This is the third and I hope final attempt to get GK1 up and running on all those XP machines out there... with voices! The two previous attempts have involved:
1. Installing as a Windows programme, with a lot of hacks to get the saved games working.
2. Copying the contents of the GK1 CD to the hard drive, and using DOSBox 0.60 in conjunction with a lot of tweaks to the GK1 RESOURCE.CFG file.
Fortunately, the new approach revolves around running the game directly from the CD (using the DOSBox mount command for a CD-ROM), and is a lot simpler than either of the former attempts. On some machines though, you need low level CD-ROM support enabled for DOSBox to be able to recognise labels correctly (thus the extra parameters: -usecd 0 -ioctl in the CD-ROM mount command below). That is all that has changed since the last round of instructions, so those of you who were previously having problems swapping CDs, or getting it to recognise the CD at all should give it another go! Two readers who were previously having problems in this area independently confirmed that it works :-) Ok, here goes:
1. Download and install DOSBox version 0.62 (or later). Get the Win32 installer version, which at the time of writing was called: Dosbox0.62-win32-installer.exe
2. Wherever you installed DOSBox to, go there and edit the file dosbox.conf, replacing the section at the very bottom of the file (Note: if your CD-ROM drive letter is 'E:', then substitute 'E:' for the 'D:' below) with the following:
[autoexec]
# Lines in this section will be run at startup.
mount D D:\ -t cdrom -usecd 0 -ioctl
mount C C:\
C:
Another note: you have to get that exactly right, so it's best just to copy and paste right out of this web page and into the dosbox.conf file using Notepad or a text editor. While you're in that file, you should also set: fullscreen=true (it's set to false by default) and cycles=18544 (I didn't just pull that figure out of a hat. If that number doesn't work out for you, see discussion near the bottom of this page).
3. Open a Command Prompt (Start -> All Programs -> Accessories -> Command Prompt) and switch to the folder where you installed DOSBox (for instance: cd \Program Files\DOSBox-0.62). Start up DOSBox by entering:
dosbox
When DOSBox starts up enter:
d:
And finally:
install
Now... using DOSBox 0.62, the Directory to install to comes up blank. With DOSBox 0.61, the Directory to install to came up defaulted to: C:\SIERRA\GKCD. However, when it asks you for Directory, if you just enter:
SIERRA\GKCD
(in other words, leave off the leading 'C:\'), that should do the trick! Then on the options review page, you should be installing GK1 with the following (default) options:
Graphics : VESA
Music: Sound Blaster Pro
Audio: Sound Blaster
Directory: C:\SIERRA\GKCD
4. Choose the (f)ull install, and answer (y)es to copy the high resolution art (Note: I get an error message after this, but it seems to have no noticeable after-effects).
5. Back at the DOSBox prompt, type: exit
6. In the C:\SIERRA\GKCD folder, use Notepad or some other text editor to edit the RESOURCE.CFG file. You should have the following in there as a result of the install:
videoDrv = VESA.DRV
soundDrv = SBPRO.DRV
audioDrv = DACBLAST.DRV
joyDrv = NO
cmd = GKCD
mouseDrv = none
memoryDrv = none
minmemory = 2M
CD = YES
smartdrv = YES
mode = protected
audio=C:\SIERRA\GKCD;D:

:\sfx;D:\patches;D:\aud
sync=D:\aud
movieDir=D:\seq
patchDir=C:\SIERRA\GKCD;D:

:\patches
audiosize=63k
7. IMPORTANT: replace the last line with:
audiosize=45k
8. Start up DOSBox again, and enter the following 2 commands after it starts up:
cd \sierra\gkcd
sierra
...and we're away! (Note: don't fret, it can sometimes take over a half minute for DOSBox to start up).
Now... if the voices are choppy, then the setting of cycles=18544 in the dosbox.conf is too much for your machine to handle. I have a 3.2GHZ Pentium IV, so the figure is based on that. If you have a 2GHZ processor, for instance, you might want to try using 2/3 of that value, namely: 12424. If this still doesn't do it for you, some readers have said that removing the audiosize=45k line from RESOURCE.CFG works for them.
As a last resort, if the voices aren't working for you or the audio is still skipping, you can run the game in VGA mode instead of VESA. In that case, you only need to make the following changes:
1. In dosbox.conf: cycles=6440
2. In RESOURCE.CFG: videoDrv = VGA.DRV and remove the audiosize=45k line.
Hopefully, some combination of the above should get GK1 working for you in XP.