I've been using FAM for years and years.  It's really great 99.9% of the time. The only downside is, and there have been countless threads on this (and many linked to mods at Intuit), it will just occasionally corrupt a file, and you have to re-enter from the last good file. 

It is a standalone that imports into ProSeries. When you set up the assets in the FAM client you indicate which form (1040. 1065, etc), it will import to, and then further to which schedule in the ProSeries client (C, E,F etc). Where it is great is in being able to print the dreaded Personal Property schedule by year of acquisition, for all the local taxing authorities.  It rolls over info each year just like ProSeries.  I would literally be lost without it.