How Do I Make The Next Prev Links Larger On The Product Listings Page

[firebug]

I want the [<< Prev] 1 2 3 [Next >>] links to be larger on the products listings and cannot find a way to do it. My customer must be blind because they cannot seem to get to the other pages. See screen shot below or see link to example.

http://www.finesgas.com/cats/Gas_Gri...ort=20a&page=2



Any help will be much appreciated.