I tried to install my ATI-drivers via vLite. It's an .exe-file.

vLite gave sort of an error, claiming it had to be INF-file or something (I don't remember the exact type).

So how do I slipstream drivers etc?

Ok there is a simple way to do it:

DL the driver only package = 8-8_vista32_dd_67980.exe

Then run it and after it extracts to the temp directory you designated you must then point vLite to that folder. The inf will be in there...