Question as to a 1.4 HDMI cable?

I would try your cable out when you get your projector it will probably work, also do no not go by the spec, there is to much controversial over this, actually if you goto hdmi.org you will see the cable company's are not to put the hdmi version on the box no more, to many sales people are trying to make you update your cables when you don't have to. I run a 3 year old cable 35feet long to my epson 6010 and works perfectly good in 3d

check out this thread...

http://www.avsforum.com/avs-vb/showthread.php?t=1382716

You can use a HDMI over cat5 (cat6 is preffered) converter. The good ones which only require only one cat6 cable vs two are pretty expensive. I have tried several and the ones under $100 were finnicky at best. If you are not carrying audio as well the cheap ones may work better. Gefen makes a really good one.

However, tons of people have been sucessful pushing a 3D signal over HDMI 45 to 50 feet. I am doing it right now on the 45 foot 22AWG cable from monoprice. I also have a HDMI wallplate and then another 5 foot cable coming off that further reducing the signal and it still works. Its all situation dependant (the gauge and quality of your cable, are you crossing power wires, the sending signal strength and the reciever's ability to pick it up, etc)

If you have the wire run in a conduit that sounds to me like you might be able to tie one cable to another and pull it through? Its always better to elimnate adapters converters etc if possible. I only used hdmi over cat6 as a last resort in one of my apartments since I couldnt run a HDMI cable through the wall.

If the HDMI cable you currently have doesn't work, what about getting a new one, tying/taping/fastening the end of the old one to the other end of the new one and pulling the new one through the conduit?

It depends on the conduit and the bends in it. With a big enough conduit and good sweeps for bends it will work fine. You might also want to attach a strong wire between them and connect each connector to that. The two HDMI connectors together can get pretty big. Otherwise, you might have to cut the old HDMI cable to do this. Another good idea is to also a pull string for future purposes.