MCE REMOTE CONTROL PROBLEMS WITH CABLE BOXES?

Here are some link to the Microsoft web site where you can find the answer about the Remote Control Cable Boxes problems.

How to Use Dual Set-top Boxes in Windows XP Media Center Edition 2005

For expert advice, free downloads, and other useful information about Windows XP Media Center Edition 2005, check out the Expert Zone.

Support Media Center Community FAQ

Any others problems with the remote control that does not works with the cable boxes, then you will need to contact the cable box companies.