dvi kvm strangeness

[h_2_o]

All right here is the setup,

2 pc's
1x2 port dvi kvm
1 pc running ati 9600
1 pc running nvidia

i am having a problem with the pc with the ati card that while it is loading up i can see the screen up to the windows spash screen (you know that welcome screen" then at that point when it seems to load the video drivers and go into high res mode i lose total sync. The following are things i've tried.

removing all power management
changing from ati's catalyst junk to omega drivers
changing the refresh from 60hz to 72hz to 75 hz
a bunch of other stuff but i can't recall right now what all i've tried.

the one thing that did work that makes me know it is somewhere in the drivers is i booted into safe mode. when xp uses the generic drivers to only allow 800x600 to the monitor the kvm works just fine, but there is a setting somewhere that is messing up the kvm to not relay the signal. if anyone has any ideas what might be going on or what setting i might be able to change it would be greatly appreciated.

thanks