SW2009 not Running after Install~4th Attempt

Need help on this one. I've burned about 12 man hours thepast couple of days fighting this new SW 2009 (SP 0) install. Ihave a Dell Precision 490 machine (about 2 years old with 64bit XPPro) that has run SW 2007 and 8 with no problems.
SW 2009 installs with no errors (yes I have McAfee 8.5 off duringinstall - it comes up automatically during reboot though) but whenI try to open 2009 up it crashes, sometimes with no error messages.This my 4th clean wipe (uninstall, then delete files, then cleanout registry).
See attached error messages I've gotten.

Any suggestions? The VAR is suggesting a Windows wipe. I think thistactic is a little extreme and discounts the fact that SW 2007 and2008 ran fine as do numerable other app's on this computer.
Is there a program or process that can pinpoint what part of XPdoesn't play nice with what part of 2009?

ThanksSolidworksAdministration