Increase Signal Strength on Belkin Wireless 54g

Move the router as high in your home as possible, and away from dense walls, metal appliances, or cabinets filled with metal cans. . .

You might also want to ensure that you're not on the same channel with other access points in your area. Of the 11 North American channels only 3 do not overlap others (1, 6, 11). Virtually everything sold is defaulted to channel 6 and therefore instantly interferes with others.

inSSIDer: http://www.metageek.net/products/inssider/ is a good tool for determining what channel to use.

changed the ssid did not help do I need to get a booster

Changing the SSID does absolutely nothing except change the network name. Did you actually try another channel as suggested above?

yes I tried 1,6, and 11 it was originally on 11