I don't understand why it's not working but if you go to Start All Programs, can you see Garmin > Ant Agent? Any reason to think it's not installed properly? You need to have Ant agent installed. There's a few people on the support forum that jsut help out (they don't work for Garmin) and from the times I've needed help, have had replies much faster on there than from Garmin. Also, have a search through their archive for similar problems.
Edited: 06/08/2010 at 11:13