How to resize scroll-bars to their original values

Hello everyone!
My first post here. I am a total newbie on VBA.
I looked into the forum and found different answers to this problem but none of those matched my specific needs.
Here is my problem:
For some reason after I run a code I wrote I find myself with very very little scroll-bars, as if I used many more rows/columns then what I actually did. I can't find an explanation for this by looking at the code I wrote.
Is there a way to set back the size of the scroll-bars to their original "standard" value through a VBA command line (or, if not, through the normal point and click Excel 2007's window)?

I have the impression that, having so little ram on my netbook, having so small scroll-bars really slows down the pc: it is like it has to load an enormous amount of cells!

Thank you very much for any help you can give me.

Regards,
Giovanni.