I have an older Nvidia 6600gt with svideo out. Pair that with a $20 RF modulator from Walmart, a $5 stereo miniplug to RCA jack audio cable, and $15 for 50 feet of Coax cable, and I can stream video to my television any time I want to.
That's $40 and no modding or tech degree needed.
Also note that you can use an Nvidia MX4000 for the video card. They sell for about $25 to $45 depending on where you buy one from.