Wirelessly posted (Opera/9.80 (Windows Mobile; WCE; Opera Mobi/WMD-50255; U; en) Presto/2.4.13 Version/10.00)
afaik, not directly. however there should be a mod that allows for 2.5 on landscape but it is still too buggy.
as far as the tect mode using htc internal messaging app, well some people have been lucky enough to have it working as soon as they flash others are unable to send or receive and some others are getting their text very late.
On energy rom I was able to send sms but not mms (always some data error)