I got Samsung Galaxy S vibrant few days ago. Since its eating too much data its very costly to run data stuff on mobile network. So I purchased a used Netgear 4 port WiFi N router on ebay for $29 including shipping
http://cgi.ebay.com/ws/eBayISAPI.dl...5J2p4kU%3D&viewitem=&sspagename=STRK:MEWNX:IT
TIP- For all you people going to buy wifi stuff on ebay, tell your seller to mark it as "Electronic Item" or something not related to wireless and cost lower than $15
If not you will have to face lots of problems like getting TRC permissions and wasting your whole day!