Well it must be my router firmware do u know what you are running? It has to b my router because I don't have problems at it her hotspots or my neighbors wifi connection :)
I'll upgrade firmware and see if that fixes problem.
It worked well before until I moved more than 15 ft away from...
Not sure about blackberry but I did get my Verizon HTC Touch Pro 2 to tether.
This might help
TetherBerry - Tethering Your BlackBerry Simply! | CrackBerry.com
I was having problems with weakening signal and dropped connections with my DLINK DIR 655 N router. I changed the settings in my router setup so it only broadcasts in b/g mode (since I couldn't rename the SSID's as Apple suggested).
This seemed to fix my problem and my connection has been full...