found this FAQ site last night and it is the best one for the MPX220
Internet passthrough is fast and you can avoid charges when downloading, etc etc

http://webpages.charter.net/dchester/MPx220/FAQ.htm

this is my first PDA phone and I love it--nothing like listening to mp3s and playing games on the phone
I ordered it on Amazon unlocked
it did not include the stereo headphones but I am going to try the Sony HPM-70 stereo headset/mic.
A 1 GB Mini SD definately works

Actually, dchester is a member of this Forum... His site is good although he has been too lazy to do some updates to the site lately

Probably he has moved on to a different phone by now.. hihihi....

Here is another good site not only for mpx220... http://www.airfagev.com/forum_topics.asp?code=all

This one you will also love...