I am doing this and it works great. Two items I discovered:
1) The ID you use to connect with must be already setup on XP Pro and must have a password with it. If you have your XP Pro machine setup with a single user with no password (so it just boots up without the Welcome screen) then Terminal Services won't work.
2) I increased my network packet size to improve performance over the WiFi network connection to eliminate the timeout errors. This requires a registry tweak and is described in a tutorial on this site at:
http://www.aximsite.com/cgi-bin/coranto/do...VuVXXmlwAl.html
I have my office PC set to require CTRL-ALT-DEL to log in and my home PC set to use the Welcome screen to select the user you want. Terminal Services from my Axim works great on both.