Office 2000 Pro and Works Suite 2000

I have a customer with an issue. Here goes..
They have Works suite 2000 ( comes w/ Word 2000). I after going to college they installed Office 2000 Pro edition. Problem is, Word has quit working. The Program box comes up but never fully opens into Word. It locks the whole pc up. ( Pc is fast enough.. 633 w/ 128mb ram). I have unistalled all programs, used the special reg cleaners from MS. and have even gone into reg and manually deleted all keys related to office and word.
I can get Word to run intil after restart. Once I restart the pc the problem comes back.
I tried different install paths and installing one and not the other. All other programs from Office will work correctly. But Word keeps driving me crazy. Any ideas will be appreciated. :(