How do i play online with my psp ?

i have a psp 1.0 jap version and wish to play other people on the network with fifa soccer.

i have a wireless connection which my psp has picked up.

so is this possiblle ?

thanks.

is fifa Infrastructure compatible on the back of the box? or just Ad-Hoc?

if you mean with other people in the same 50ft range of you, you can play anywhere at any time with them through ad-hoc
im not sure about infastructure tho...