PSP Is it possible to establish an internet connection for my psp using a wireless usb adapter ?

i have a 256 kbps broadband net connection which has been networked using a wired network router. after googling i have found out that there is method by which internet connection can be established for psp using a usb wireless adapter ...this method uses winxp's ICS (internet connection sharing) feature.

Now what i basically want to ask is that is this really possible

will it function like a wireless router ?

Using this can i establish a infrastructure connection for my psp > >>. That is i should be able to play multiplayer games online , surf the net , and download content ........

please reply fast as i have to purchase my things in 5-6 days .........