vbscript for serial communication

[dbemowsk]

I am wondering if anyone can point me to a visual basic script that can read and send to a serial port.  The reason I ask is that I have an RCS TR-40 thermostat that I would like to pull some data from for a PHP script.  All I need to do is send a request for the temp, and have the script wait for a response.  Once the script receives the response it will output it to the command line.  This can be read into 'a PHP script and displayed. 

Any help is appreciated as always

Dan B.