Macophile, I bumped up the site that has the converter boxes rated.

You can still request your second coupon, I'm pretty sure.
Doesn't hurt to try it.

Hooking the boxes up isn't too difficult, just depends on your comfort level.
If you have a lot of additional components it's more wires but if you sort them out and connect one by one you should do fine.

Most TV manuals, as well as the converter boxes have pictures and a guide telling how to connect/set up.
And you can always do a search for images of how to connect if you get stumped

I tried a cheap/bad box - Venture {40.00} Return it to the store if it doesn't work well for you - I did.