the only way to boost speeds is with better hardware
i had a linksys wireless b router and pci card
i upgraded to a wireless g with speedbooster router (upstairs) and i put a wireless g access point in the middle of my house, and got a wireless g with speedbooster pci card
much better performance, but i still hate wireless, its good, WHEN it works
plan for the new house:
make use of my gigabit lan, buy a gigabit router and some cat6(gigabit) cables and hard-wire my comp..