MS Project 2000 locking up under XP Pro

[TDog]

I'm trying to run Project 2000 under XP Pro SP1 and it locks up on a regular basis. I've reinstalled, downloaded the latest patch for Project and checked the MS KB. I don't want to install SP2 unless I have to. The machine has 512M RAM and runs fine otherwise.

Has anyone heard of this before and hopefully have a fix?

Thanks in advance.