We understand what you have and what you are trying to accomplish. FreeNAS can probably handle it.
Unfortunately, since you "have no idea what you are doing", you are a long way from achieving that goal with FreeNAS on your own. Since you didn't list detailed hardware information (per the forum rules at the top of the page), we don't know if your server is capable of running FreeNAS, nor whether you've setup the disk(s) correctly.
At this point, my recommendation would be to add a dedicated hard disk in your Windows machine and save the video (locally) on it.
If you'd like to setup a FreeNAS server, take your time and do some learning. You can download a PDF or ePub version (11.0 coming RSN) of the docs using a link in my signature. Read it, take notes, read it again, etc.
Or you could post an offer of $$$'s asking if someone could help you setup a FreeNAS server to accomplish your needs. Even if you go this route, I'd still recommend that you read the documentation.
As I said in my first post I have no idea what I am doing.
... I can have it record to a local hard drive with the Genius Vision software.