I checked and I had it installed already. So tried the install again and this time when windows asked me who I would like to be able to use this program i unchecked the box about protecting your computer and it actually ran the install, then cubase failed to install but everything else (Monolog, Hallion Sonic Se, etc) completed install as though all was well. still no Cubase 6.5 installed tho.
So, then I just opened the directory on the installation dvd and ran the installer for cubase(bypassing the startcenter) and it installed cubase 6.5 and updated all the other stuff and all seems well now. well, atleast i was able to load a project from 4LE and it played it. So maybe XP users just need to skip the autoplay (startcenter) and run the setup.exe for cubase under /cubase 6 for windows directory. at least thats what i would do if i had a chance to do it all over again.
Thanks for the help