I have both MS Word (1997) and WordPerfect (2000) on my home and office computers. I like WordPerfect the most of the two word processors, but for some reason it takes up a lot of memory. When I open Word, my resources drop about 4-5%. When I open up WordPerfect they drop about 13-16%. Does Word just handle memory well and WordPerfect not? I couldn't believe it when I noticed how much WordPerfect was using.
Word will probably inherently use less memory than WordPerfect because much of what is in the word processor has direct ties back to Windows, something WordPerfect does not. Net overall, WordPerfect wil use more, but Word is also visible in system resources (and not just the program) as well.
We use WordPerfect here -- make sure you have the latest patches to WordPerfect Office 2000. They actually had to rewrite a good portion of the application. Ask Corel to send you CDs of the newest, patched version, and see if that fixes anything. You can't download the patch because this is basically a rewrite of much underlying code. You have to uninstall WordPerfect 2000, then Reinstall it with the new CDs they send.