Doug,
Easy!
I've done a fair amount of work of a similar nature, hoping eventually to sample a few local organs. The hard part for me is noise reduction, which should be no problem at all recording directly.
Once the recordings are in the computer, it will take something like SoundForge to clip and manage files, and then the (free and awesome!) LoopAuditioneer to make loop points. No step is hard, but there are lots of steps, and it becomes tedious to do over and over - made me apprciate what real artistic achievement is in even a very small sample set. But for one stop with clean recordings - nothing to it but time and patience.
I'll be glad to help you get started if you're interested.
Rick