Then you need to get something that has MIMO in or on it. This is one of them...
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.