What I used:
1) Sanyo 8100 + usb cable
2) RATOC USB host card
You'll need the usb modules and ratoc drivers from
here.
After you install those two ipks and reboot, follow the instructions on
this page. There's no device node /dev/ttyACM0...so you'll have to create it by doing the following: \"mknod /dev/ttyACM0 c 166 0\". Modprobe acm and you are set. pppd call sprint, baby! To disconnect just do \"kill `cat /var/run/ppp0.pid`\". I get 8-9KB/s on average with bursts up to 13KB/s.
Happy wireless web surfing!