Hey mate if you're looking to glow something up, go to Effects>Glow.
And your signature should be no larger that 500 x 100, your's is wider than 200. It's a rule... http://paintdotnet.12.forumer.com/viewtopic.php?t=3446 Rule number 13.
If you would like to post pictures on this forum you first have to upload them somewhere (e.g. http://www.imageshack.us/). Then using BB code put the link between the "" functions.
Here's another short lesson for you: by pressing and holding the "Windows Logo" button then pressing the "R" button on your keyboard opens up "Run".
Shortcuts make life easier...
Just edited a spelling mistake.