Most likely not, as you would need the client software installed on your handheld.
One VERY exciting development that I found yesterday was a functional RDP client for the BB!!!!
I can't believe that it actually works... It's amazing. The BB has been a fantastic tool for years, but one thing that has always annoyed me is having to take a laptop on short (2-3 day) business trips so that I can view word/excel/pdf and use RDP to access servers. Since the 8703e can view the doc/xls/pdf files, and I am now able to connect to my servers via RDP, I am in heaven. Now all I want is VPN support. Give me cisco VPN client support, or a browser capable of handling SSL VPN, and I'll get rid of my laptop completely!
SHAPE Services - Software for PDA and mobiles: MSN, Yahoo!, AOL, ICQ, Jabber, LCS, Sametime