les, why don't you use GPRS?
In here it's only 19$ per month without any plus fees...
it's faster than your current speed and you don't have to sit at the desk all the time.

I was thinking of buying this new nokia card which support gsm (900/1800), GPRS and WLAN.
it still costs 430$ but then don't need multiple cards to get to net.
_________________________
!

download KiXnet