If you haven't yet, please have a look through our WordPress help section here:
http://www.e-junkie.com/ej/help.site-blog.htm#wordpress
Depending on what-all you may have added to your WP site, there may be conflicts between our cart javascript and other scripts in your site. Such conflicts can often be resolved by rearranging where the script portion of our View Cart code (from the first <script... to the last </script>) appears in your pages' source code with regard to other scripts (i.e., a matter of which scripts load before/after others); we'd recommend experimenting for starters with putting our script lines just after the <head>, or before the </head>, or just after the <body>, or before the </body>.
Once you have the script lines of our View Cart code placed in a functional position, you can place the actual button link portion (from <a href... to </a>) of you View Cart code anywhere you wish, or even omit that part entirely if you wish (though we wouldn't recommend it from a buyer-usability standpoint).
For more specific advice, please provide the URL of your live site, so we can have a look at what might be going on there for ourselves directly.
