Under device manager, see if you have ehome listed, if so enable mce remote in MP config.
Lets hope thats it.
THDBASED
This is what i could find relating to IR for Hauppauge, hope your card is here or listed in your own country's hauppauge website.
http://www.hauppauge.co.uk/pages/support/support_new_mce.html
ps. scroll down page to IR install