If I am on a budget, is a 480p home theater projector acceptable for now? and upgrade in a few years?

I am looking to get a home theater projector, but I don't want to spend more than 600. Preferably 5.

I considered a business projector but they often do not have component or hdmi inputs.

I will used it mostly for regular DVDs for now and my Wii which only goes as high as 480p with components.

I think it may be better for me to get a dlp 480p 16:9 for now and upgrade in about 2-3 years when I burn out a bulb.

I figure than by then, I can afford a higher resolution projector as the prices come down. Plus, there should be alot more HD content out by then.

It seems that to get anything descent from a name brand like InFocus, Optoma or BenQ that I need to spend close to a grand to get 720p.

If I am just using regular DVDs, I would think that 480p is just perfect anyway since there resolution is usually in the realm of 720×480