Also the standard size of a userbar is 350x19. I think you are using 350x20. Not that I care... Just thought i'd let you know.
Try to user more layers to build up some depth in your bars. Liek the windows user one you made, you could have added a keyboard in the background, lower the opacity and use like a soft overlay blend. Just a tip... don't forget the 1px black stroke around it!...
its explained above how to get the cross lines, one thing though that wasn't mentioned, you gotta increase the stamp size when your putting the pattern on