Merged cell with no needed spaces

Hi. I am using Excel2003 and when I creat a merged cell, the word inside it gets unneeded space after it.

When I create a merged cell with the word "PEN" and I 'copy and paste' the word "PEN" from Excel to the NotePad, the word "PEN" gets a lot of spaces after it and looks like that: "PEN___________________"
(read _ as a space. so, how you can see, the word gets a lot spaces after the it)

Is there any way to remove these spaces after the words inside the merged cell?