UBB.threads PHP Forum Software Community Forums Resources and Customizing How Do I? Making the Smilies appear bigger

Hi there

How can I make the smilies in my forum appear bigger.
I have uploaded new smilies and I kept the names the same, for example, smile.gif or thumbs_up.gif.

The new smilies are a bit bigger.
So when they users select them, they appear in the same width, height the old ones did.

Any way I can set the smilie width, height in code?