you should be able to just download it from Support area. I'm surprised you think SP3 is compatible with IE7. The official word from Support is that TS 6.5 is NOT compatible with IE7, whatever the patch level. As far as I remember.
THanks for reply.please see this link:http://devnet.interwoven.com/site.fcgi/techlib/56743This page clearly shows that TS6.5 SP3 is compatible with IE7