[bairy]

Yip. Create a second smilie category named "Big smilies" or something, and move the large smilies to it, then put:

WHERE smilie.imagecategoryid =1

above the ORDER BY line in the query, that will select smilies only from the default smilie category.

Of course that means the big smilies will only be accessible via viewing all of them.

Also I'm not one to critisise others, especially on matters such as php file hacking, but:
This is a tiny tiny file edit. I know everyone has become ultra sensitive about file hacks since the plugin system came out, but this is a 10 second job. Upgrade, Re-replace it. If you clicked install it'll show up in your profile so you can quickly find it again.