Open Office is fully compatible with Word, it can read word documents, it can write them, it can create them. Same for excel. The only thing I am unsure open office can do is PowerPoint. If you still have the product key, then can M$ and say your Cds got damaged or some other excuse, and ask them for new disks. Or, (I am ASSUMING you have a legitimate product key), you could borrow discs of the same version (ie Office 2003) and go about it that way. If you like office better, then use it. But in a few years when you need to upgrade your office suite, seriously consider OO instead $350-$500 is worth a lot of minor bugs in an office app.
AGP won\'t fit in PCI-E... unless you use a really good hammer. ~Trotter