Sony Ericsson Xperia X10 :: Cannot Send Video In MMS

So today I filmed the kids to send through MSS to their gramps. I used the MMS setting on the camera since the X10 can't edit video (amazing blunder if you ask me). But even with this setting the video gets too large to send. I've tried to change the allowed size in Handcent but that only removes the message about too big a file. The MMS is marked by a red clock indicating not sent. The original app does the same thing. Anybody else with this problem? The phone is rooted now but since so little can be removed after rooting due to problems with other apps I guess I'll just un-root it soon and live with Moxier. It's basically the only major app that can be removed without consequenses.