Eric, (If you are still there - Or someone else who might know)

I guess my question is, (Please pardon me if this seems stupid as I come from developing all applications in VBA where they would just need to set Macro security to Low) if I develop an Application using VSTO and then want to give it to a few people (Not at some large enterprise but some utility that say tracks your expenses in Excel, provides a simple UI, etc.), what will they need to do in order to be able to run it or can they run it at all?

Thanks.

Bob