Check here for the best software I've found for the Yaesu FT-8900R: http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=3158
The junk offered by RT Systems is pure CRAP. I won't buy anything offered by those people, and their customer service is NON-EXISTENT. Loads of issues with everything they put out. But the above link is for the FTB8900 software, which works perfectly every time.
FTB8900 software is the only way to go if you have an FT-8900R radio.