Wa Alaykumassalam,
This is true, because Bismillah is counted with every sura's first aya
(except Fatiha in which it's a separate aya, and Tawbah which has no
Bismillah).
Still, the root database has some ambiguities when you want to find
root for a Quran word. It may return then one, two or more roots. I
discussed these ambiguities here:
http://groups.google.com/group/zekr/msg/4d11874d3ec2add3
Regards,
Mohsen.