How do i hook up mac mini to projector?

Plug the video output of the mini (DVI/VGA port) into the projector and voila!!! Mac's rarely need to be manually configured, it should pretty much be plug-and-play.

I found a dvi to hdmi conveter plug on ebay for 5 bucks. Thanks!

go to monoprice.com and buy a DVI to HDMI cable, their best.. do not us a converter..

I've compared these to the best wireworld cables and they are really amazing for the cost!

Is this the cable i need here?

http://www.monoprice.com/products/product.asp?c_id=102&cp_id=10231&cs_id=1023101&p_id=2751&seq=1&format=1#largeimage

that's the cable but are you sure you need 50ft? Run some string to check distance.
because the CL2 (plenum fire rating) only go 25ft.

The other option is a HDMI to RJ45 extender which is now being made.

I've run 75' VGA cables from monoprice and they were amazingly clear.. with a 50' VGA to RGB that looked stunning.

I haven't found any prices anywhere near this for this type of quality. There are tons of threads on AVSFORUM about their cables also.