I currently have a Linksys WRT54GL wireless router and a WMP54GS PCI Adapter card but i only get low or very low signal, is there anything i can do to get a better signal without spending a lot of money?
The best obvious solution would be to move either the computer(s) or router, but if thats not possible, you can try upgrading your router and wireless card to an 802.11g with something such as speedbooster or rangemax. Or you can buy a draft-n router and card, which have longer range and faster speeds.
Or if you dont want to buy anything too expensive, buying new antennas may help.
BTW, which type of wireless are you using? (a, b, g, n, etc)