In the next release there is a specific skin now for iGo. This is the command I am using to run it:
LOAD;GPS_iGo.skin||Run;C:\Program Files\IGOPC8.0.0\igo80_pc.exe;iGO 8 - PNA
When you say it is not embedding, I am sure that has to do with it having the correct window name to embed. iGO 8 - PNA is the name of the window for the version I used to test with.