I found a neat website the other day (actually, it wasn't me - my wife told me about it after she went to a class for grantwriters; if you're interested in her services, contact email@example.com).
Techsoup.org provides 501(c)(3) organizations with dirt cheap software. MS Office 2010 for $24 (Excel, Word, Outlook, etc). That's a lot cheaper than anywhere else I've seen. They have a whole host of other software products such as Blackbaud, Adobe, etc. (probably about 30 different titles).
Check them out and see if you can get some current software on the cheap for your organization. They'll think you're a hero (and you can thank me later).