Increase you SMS's text input space!
I saw this one on Windows Mobile forums, and it seemed very interesting:
All credits go to JasperUK:
"This can be achieved editing the HTML file called thread_sms.htm, thats in the windows folder of your Touch HD.
The change you need to make is in the line of the thread_sms.htm:
<Inbox:content id="COMPOSESUBJECT" width="98%" height=55 spell focus count links noclearonbackpresshold limit=0 autocap inserttab scroll />
You need to change the height value. I've change the height value on my HTC Kaiser to 55. To achieve this you'll need Resco Explorer or Total Commander. For changing and reseting the file attributes of the thread_sms.htm in the windows folder.
As always, make a backup of the file and your data before changing any system settings."