Copying, moving and/or deleting blocks of text on a Windows Mobile standard (non-touchscreen) phone may not be as convenient as it is on a Windows Mobile professional (touchscreen) phone, but once you get the hang of it, it's pretty easy:

First move the cursor where you want to start selecting text you want to copy, cut or move.

Then Select Menu > Copy/Paste > Select Text (See 1st screenshot above)
Now when you move the Voice Messenger's optical navigation button right/left and up/down, the text will be highlighted.  Move the optical navigation button to select all the text you want to copy, cut, or move.

After you've selected all the text you want to copy/cut/move, select Menu > Copy/Paste (see 2nd screenshot above)

To MOVE text:

• select Cut from the menu
• move your cursor to the place in your document where you'd like the text to go
• select Menu > Copy/Paste > Paste

• select Cut from the menu.
• You're done.

• select Copy from the menu
• move your cursor to the place in your document where you'd like the text to go
• select Menu > Copy/Paste > Paste

Here's a great video that demonstrates this procedure on a Windows Mobile standard phone and the last half of the video shows you how to do it on a Windows Mobile professional phone.