Rosewill uses RC6 drivers. So, it will work
Here it my take on the IR receivers that are built into the case, or are otherwise are near the case. Unless you have your HTPC RIGHT under, NEXT to, or ABOVE the TV, other users in the house will point the remote at the TV and if IR receiver is not there, or it has a narrow angle, nothing will happen. They will keep clicking and getting frustrated.
Our HTPC is in the entertainment center under the TV, but not right under. My solution is to run a USB extention to the TV, and mount the IR receiver to the bottom of the TV with double sided sticky tape. No issues whatsoever.
I am using Ir receiver form Addeco remote, and Harmony 610 remote. Addeco is not using the same RC6 protocol, so programming Harmony took a little bit of effort (learn function of Harmony is very handy)
6 TV's in the house on FiOS and we only pay $4.99/month to connect them all!!! Power to the CableCard and WMC7!!!