Cheap: USB transmitter - USB reciever?

[sotu]

Is there any cheap electronics that can fit my need for this:

I need to transmit my cam recordments from my webcam on my robot, to my computer. The project is a RC robot with a cam on it, so at some distance i can control the robot by just watching the screen of my computer, i would think bluetooth is a option, but where can i get something like this (that is affordable = under 80-100$ at least)

Enough text, i've made a sketch for you to make it easier to understand (the red "box" on the sketch is what im looking for):

http://s173.photobucket.com/albums/w60/sotu_maskot/?action=view&current=bluetooth.jpg

[Ro-Bot-X]

Can't do it with Bluetooth, have to use a wireless cam with the receiver connected to a TV or a capture card in your computer (TV Tuner). Something like this:

http://www.superdroidrobots.com/shop/item.asp?itemid=880

Or, you can use a Wireless Webcam, but those are more expensive.