Latest Version

If you mean Microsoft Office, then Office 2003 or Office 11 as its also known as, version 12 of office is in early beta at present.

http://www.microsoft.com/office/editions/howtobuy/compare.mspx



but there is a free alternative called Open Office from Sun Microsystems http://www.majorgeeks.com/OpenOffice.org_For_Windows_d3461.html ( not to be confused with MS office, but it will do alot of the things MS Office will do but free as its Open Source )

 

Opened just fine, the last time I used OO comperroruter ( woohoo got your nick right! ) which wasnt the version I linked too as that one is the latest, but I have no doubt it will also be no different ( Access Docs did have some issues with an earlier version of OO but I rea they have fixed that ) to the one I used and it opened Word, Excel, Powerpoint etc fine

 

Open Office will work fine on Windows.