How can I get an RSS feed in my sidebar?

Hi guys, just need some really quick help. I’m working on a site using the e-wallet theme, which is caused me a lot of problems, but i’ve managed to resolve most of them myself. But this one has stumped me. Any idea how I can add an RRS feed in to my sidebar? Because widgets aren’t available with this theme, i can’t do it the normal way, so if anyone has any idea, it would be hugely appreciated.

Thanks!