Hi just installed Where Is My Phone? (W.I.M.P.)
Thought others might be interested
quote from site
"With mobile phone crime an ever increasing problem, W.I.M.P. offers an advanced phone tracking security system.
In the event of your phone being lost or stolen, you can simply send a specially formatted SMS text message to the phone and the W.I.M.P software will silently intercept it. W.I.M.P. will then send back a message containing the phone's GPS location in a format which can be entered into any common mapping application.
Obviously, you don't want just anyone to be able to track your phone. Therefore, a 4-digit PIN number is required to authorise location requests to the phone.
Features
Runs silently and covertly in the background. It doesn't even show in the list of running programs.
Will send your phone's GPS coordinates via text message, allowing you to accurately track your phone's location using any common mapping application (e.g.
Google Maps)
If the SIM card is replaced on the phone, it will automatically send a text message informing you of the new number "
software available
Here