[Fraz]

To be honest, I think you'll struggle to find an affordable external video scaler box that can upscale 1080p to 2560*1600... but I'm not very familiar with such devices. I really don't think what you want to do is going to happen, or will not be worth the hassle/money.

One "solution" could be to sell your 3007wfp and buy a 3008wfp... but frankly, why not just buy a nice new telly?

I'm disappointed with Dell giving you such poor information...