The most simple answer to this is "yes" - you just have to point to the proper port (generally 80) and send the required queries, handling the responses as you would through normal client-server communications.
It is entirely possible to communicate with a website using Java ME without the built-in browser, just takes some programming as with any other app.
Theodore Jonathan Casser
SCJP/SCSNI/SCBCD/SCWCD/SCDJWS/SCMAD/SCEA/MCTS/MCPD... and so many more letters than you can shake a stick at!
How do they get the deer to cross at the signs? Or to read this tiny ad?