A swap file is the virtual ram, its a file that depending on your config is either fixed or will change dynamically depending on how much data is being offloaded to the swap file.

An SSD wont help your computer render any faster

I would be amazingly supprised if you do not have a swap file. You can normally check if you have one by clicking start then run and typing

<pre class="in_text">
sysdm.cpl

Then look under the advanced tab and in performance click settings.
Then under advanced you will see the virtual memory.

Regards
Jon

DA Portfolio - http://jonj1611.daportfolio.com/