Configuring iTalkBB to work with airport express.

[highgroove]

I had this "great idea" to try the China-based iTalkBB voip service to save some cash on my phone bill but I can't seem to figure out how to configure their Linksys VoIP phone adapter/router to work with airport express. The Linksys model is SPA2102-R and I've verified it's settings by hooking it up direct via ethernet. The chinese support people--God bless them--they are outstanding and have called many times to help. However, my wife has to translate everything to me and they don't know diddly about macs. Guess there are no macs in China. If you have any suggestions, I'd really appreciate the help.