Yup, just put it on your site somewhere and post a link in this thread. Ditto for whatever text you would like to have in the description. I can get the button from your site. (Besides, if it's on your site, that might encourage other folks to link to your site!
)
Incidentally, the reason for the size and format of the button is because Mike hard-coded 88x31 GIF into the original version of the Ultimate Sims List. It's an Internet Advertising Bureau standard size, y'see.