If you search the web (Google, Live, Yahoo, whatever), for "infopath sql server", you'll find articles like the one at:
http://msdn.microsoft.com/en-us/library/aa159896.aspx
That one is about how to connect InfoPath to SQL Server, either directly or through web services. (It also has data on how to connect Excel, Word, etc.)
Start with those.
- Gus "GSquared", RSVP, OODA, MAP, NMVP, FAQ, SAT, SQL, DNA, RNA, UOI, IOU, AM, PM, AD, BC, BCE, USA, UN, CF, ROFL, LOL, ETC
Property of The Thread
"Nobody knows the age of the human race, but everyone agrees it's old enough to know better." - Anon