InfoPath Dev

I have an equipment list in an access database that I want to query with infopath. I'd like the user to enter multiple serial number run the query and get table with the description etc. for each serial number. Where do I start?

You can create a database form which uses an Access DB as the primary data source, but I don't think that's what you want.  Integration with Access is limited out of the box with InfoPath.  If you can store that data in either SQL or a SharePoint list then doing what you want will be miles easier.

I don't think you'll be able to run a query on multiple serial numbers, but start out with a simple, out of the box form, and see what you think. Here's a screenshot of where to go in InfoPath 2010 Designer. Hope it helps.