If she is looking to piggy back on her neighbors connection she's out of luck when it comes to the TX. If the neighbors router only supports G then she will not be able to connect with her TX that only supports B. If she is looking to buy her own wireless router and get a highspeed connection then there are routers out there that support B and G or ever A, B and G.
I agree with you there Zubaz, if I had a neighbor that I knew who had an open access point I would definitely let them know.Here's hoping your friend decides to do what's right.