The most obvious answer would be to use WScript.Shell and the .Exec method to start a telnet process.

Use the StdIn property to send commands, and StdOut to get results.

If I get a chance I'll write a wrapper for this, as it could be quite useful for general "send/expect" tasks. It'll be a little while though as I'm just back from a business trip to Prague and will need to catch up on paperwork.