Interesting - my Dell had Trend Micro pre-installed and I have now switched all my PC's to Trend since McAfee brings them to their knees while scanning. I just got a nice netbook on sale and installed Trend on it too.
BTW, the main reason I got the netbook was to run Garmin
nRoute software. This was a free program that Garmin has discontinued. Basically, it looks like Mapsource but supports real-time navigation and mapping. Quite a nice little program, and it renders my New Jersey and Pines maps beautifully - much nicer looking than Mapsource.
Garmin no longer supports it and has even removed it from their servers, but you can still get it here. I am using the nRoute_276 version:
http://gawisp.com/perry/nroute/
If you use my maps, check this program out. If nothing else, it provides a nice way to view them on your computer. After installing, it will read all the maps that you have already installed in Mapsource, so just pick my map from the drop-down menu or use the View > Product menu.
If you have a Garmin handheld GPS, it can be used to display your position on the map. If you have a nuvi or a non-garmin USB or bluetooth GPS, take a look at GPSGate. It should allow you to connect them to nRoute and even split the GPS data between multiple applications - very cool little utility:
http://www.franson.com/gpsgate/