MMS Outgoing Timestamp Off by -4:00hrs. Running out of solutions to try! Help!

[ReverendDizzle]

Here is the situation:

I have an HTC Touch Pro that sends MMS messages with an incorrect time stamp. The time stamp is behind by 4 hours (send an MMS at 4PM the recipient sees it as having arrived at 12 noon)

I've tried all sorts of potential solutions and so far none have worked:

I tried setting the "TrustTimeZoneField" to 0 in the registry. Nothing.

I tried setting the RecvTimeStamp to 1. Nothing.

I tried switching the to 1 and 0, 1 and 1, 0 and 0, respectively... and nothing.

When I look at the timestamp on the Touch Pro it shows the correct time (i.e. an MMS sent at 4PM shows that it was sent at 4PM -on- the Touch Pro but everyone who receives it gets a time stamp 4 hours in the past).

I'm not sure what to do at this point. It's really annoying to the people I send messages to.... because the 4 hour time stamp error puts the MMS messages stuck back in their threaded comments. Help!