In general (99.99) the only mapping software that will load on your Garmin unit. Garmin upgrade their Topo software this year.
What models did you purchase? How do you plan on using them? For most uses MapSource Topo US 2008 is my first recommendation. The Rino 110 will not take external maps. If you have the higher in Rinos then the selection of Map Source software is greater.
Here is a link to a tool that will help you see what software will work on your units.