See what version(s) of directx are installed, then do a forum search for keyword 'directx' - there's several topics intermixed among
the results.
You might also try editing the eq config file to start in windowed mode, and possibly bump the resolution down to a known good
matrix (i.e., 800x600, 1024x768, etc...)
I'm surprised you're getting a straight drop to desktop with no error message box. Double-check the 'Getting Started' faq here:
http://wiki.eqemulator.org/p?Frequen...etting_Started
Someone posted a UI issue with a 'clean' RoF2 download in the last few months..if I can find it, I'll post a link.
EDIT: Since it seems to affect UF as well, you may want to check the other computer's firewall settings.