Description of problem:
on certain Nvidia cards (mainly XFX cards), the screen will not be displayed 
properly, therefor anaconda is inusable (in my particular case, i get green 
stripes, and no image. the problem lies in the fact that Anaconda forces 
itself to use the 'nv' driver instead of 'vesa' (it would work with vesa)

Version-Release number of selected component (if applicable):


How reproducible:
Boot the FC5 install, with a XFX graphics card) and just run Anaconda

Steps to Reproduce:
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Actual results:


Expected results:


Additional info:
you should make an option where the user can choose what driver Anaconda will 
use