I am running the RC4 of RaspBMC, and using an MCE IR controller I bought off eBay for around £5.25. Works out of the box, but I have also remapped some of the keys - possible in RaspBMC. Hope that helps.
Thx for the quick answers. I was going to build a costum case to it aswell so i wanted to find a solution were i could add a ir port to it. But i think i have an idea on how to make it...