|If your problem is due to being unable to open Word2 documents in later versions of Word, it is because any version after 2003 had a security change that meant documents produced by earlier versions were blocked. There is a way around it by changing a registry setting - the information from Microsoft is available HERE|
As Fred says, Word 2 is a very old program and you would be unlikely to be able to install it on Windows 7. If you just need a decent, free alternative, try OpenOffice.
"I've always been mad, I know I've been mad, like the most of us..." Pink Floyd