Adding a wifi sdio card to the M515 is nuts, cards start at $50, and
other PDAs with builtin wifi aren't much more on ebay. Since I also
would like a phone with me the HP ipaq 6315 is kind of tempting, pop in
a sim for UK, and pop in a different one for USA when I get home. I'm
still learning sim, but looks like it works.

FON? I just read about an offer from them, $5 + I think $8 S&H for a
wifi router, but you have to agree to leave the connection open for a
year to people who register at fon. I thought the access was free,
maybe its free if you put out a wifi spot of your own?

Remember that to become a FONERO and connect for free to any access
point within the FON Community worldwide, you will need a FON Social
Router. What is a FON Social Router? It is a WiFi router with FON's
software inside. It allows you to have WiFi access from home but also
let's you communicate with other members of the largest WiFi community
in the world. You share your WiFi connection in a safe and secure
manner, and you show all the other FONEROS where you are located on the
FON Maps. In exchange, you may connect to any FON access point around
the world without paying a dime.