Well, when it happens that I have to work on Windows, I use putty.
And I remember that PuTTY had a symbian port (before I came over to the berryside).
I dont have time now, but have a look at Putty's compatibility, maybe the dude kicked out a BB version (I love putty)
Otherwise, midpSSH
I wish someone would build a new ssh app that was storm compatible etc... Id pay for the work to be done midpssh seems buggy to me and i cant always screen over to various work related things such as irssi or ftp apps. It gives me strange errors. Lets port putty!