Recommend a wifi dongle for access point setup

[Wrechid]

I really appreciate your interest... As for checking the dongle for AP, I used "iw utility" on RBMC... On Xbian it didn't seem to work, as if iw utility is not installed... The command would be "iw list"... Do a search for iw utility for more info...
I have a feeling that this how-to is a good place to start, http://raspberry-at-home.com/hotspot-wifi-access-point/
There's a simple script at the end of how-to that I been trying... Tomorrow I will try do the how-to without the script and see if a error comes up as I go... When I use the script, it appears to have completed, but when I reboot Xbian, it doesn't boot... Just leaves me at a black screen...