Cat 5E or Cat6 is for Gigabit Ethernet.. read the details here
http://en.wikipedia.org/wiki/Category_6_cableI hv similar setup as I store all my content in a DNS-323 NAS...
To prevent from doing ugly wiring, I use a pair HomePlug Powerline Adapter ( 85Mbps or higher ) and connect to the NAS via mounted network drive..
With minimal power adaptors in between the two power points, I can get somewhere like 15Mbps pure speed, enuf to stream the HD movies content from the NAS to my HTPC.. no need speed until Gigabit Ethernet...
Just google for HomePlug.. I think there are newer models with 200Mbps or options with wireless...
I am using the Aztech brand.. my model 85Mbps is selling for like RM110 per unit in a lelong.com.my posting.
thanks... that help!

Added on March 28, 2010, 7:41 pmQUOTE(pierreye @ Mar 28 2010, 07:21 PM)
Homeplug might not have enough bandwidth for Blu-ray movie. Note that 200Mbps is theoretical speed and depends on noise in your power line and if it is in the same gang. You would be lucky to get consistent 30Mbps out from Homeplug and remember it is share network. If you are doing from ground up, best go for Cat5e (up to 30m) and Cat 6 (100m) for gigabit network. I do a copy from network for large file and the speed is almost as fast as eSATA HDD local copy. Also get a gigabit switch instead of hub.
Regarding power line and network cable, normal recommendation is to cross the cable instead of running parallel. Normally UTP cable is quite good at noise rejection due to twisted pair. If you are paranoid, go for STP (shielded twisted pair).
thanks.. you are helping me alot!!!..
This post has been edited by hilk: Mar 28 2010, 07:41 PM