Then you need to get something that has MIMO in or on it. This is one of them...
http://www.bestbuy.com/site/olspage....=1115364694550
It allows multiple people to gain wireless access all at once over the same router. Example would be me downloading Fedora 5 Test 2 DVD and at the same time another computer downloading Scientific Linux 4.x 4-CDs, granted the network would slow down considerably for everyone else but when one person sends a packet to the wireless router and another is downloading from it there are no collisions and thus no drop packets.
That is the simpliest way I can explain it. Somebody else may have other suggestions. but that is what I would do.