ok have tested vista RC2 again.

this time i used new vista nvidia drivers and also new sound blaster x-fi drivers.

i run average of 100fps in LFS and sound works fine from sound block 3 now. i only still have the audio-positioning problem. like when you crash at high speed into a wall you dont hear a crash sound.

now im going to try that directsound tool.

TEST Patch U23. DirectSound now implemented into LFS!

http://www.lfsforum.net/showthread.php?p=243881#post243881

Thanks for your help! I'll close this thread now.