Logo in eps but need to convert to jpeg

Hi -

I don't think iPhoto has the ability to change an eps file to a jpeg, but maybe I am missing something (?). I have a logo that was designed and saved as an eps file. I am trying to upload the file to an online biz card site but they only deal with jpeg. A friend converted the eps to jpeg but apparently it is now too small now for the site. Any suggestions on either resizing the jpeg ( keep trying to adjust the size of photo in iPhoto up to the min specs of the site but no luck) or a way to convert this file?

Thanks!