If you didn't have patchme in the EQGAME.EXE shortcut then you may have already messed up something and went live patch.
I have run stock Titanium and stock Steam released Underfoot on both windows 7 32 & 64 bit (home edition and ultimate) , and on vista 32 & 64 bit versions with no problems as long as you turn off the dumb UAC in User Accounts/Change user account setttings - location.
I also have never had to use compatibility mode on any version.
__________________
|