[Wine] wineconf screwed xp install

[Manorba]

hi all, i think i need a little help... [Crying or Very sad]

after i installed kubuntu 8.04 with kde4 on my pc (which already has a XP install on a different disk) i went on to configure wine with wineconf.
i think i made the mistake of pointing the c: drive for wine to the real c: with the xp installation in it.
point is, now xp is screwed. it boots, loads until getting a totally black screen with the pointer instead of the desktop... even in recovery mode. 
browsing in the windows directory i found a recent ntbtlog.txt that has countless "cant load driver XXXX"...

any suggestion on how to restore the xp boot?

thnx in advance
mAn