Since there is this newbie restriction please help me here.

First about bitcoin miners. I'm using a guiminer and everytime i try to load video or some webpage loads a video while the miner is on it crashes. No matter what i set fror the -f or -w value for. Any workarounds for this? I would like to us the power of my oc'd 6950 while watching movies etc.

And then about namecoin. For some reason i did not find a usable guide how to set it up on windows/or requirements for it. I installed it and when i try "namecoind.exe getnewaddress" i get:
C:\Users\... ...\namecoin_win32>namecoind.exe getnewaddress
error: couldn't connect to server

I am behind NAT and some firewall that i have no access to. Any way to get it working?