Do you think i will be able to use my present PSU and cabinet?
And by the way what is MC Remote? how much does that cost, any links would be good.
Regarding cabinet, yes, regarding PSU check if these two connectors are there in PSU
Here is an example of MC Remote, will allow you to control your pc using a remote. Many Indian sites have cheaper versions of this too.
Amazon.com: New HP OEM Windows Media Center HTPC MCE PC RC6 IR Remote Control + IR emitter and Infrared Receiver for Windows7 Vista XP Home Premium and Ultimate Edition (Discontinued by Manufacturer): Electronics