I've been using an "HD Fury 2" converter for the past couple of years with great success. The converter cost about $150.00, however.
The problem you would then have is that the output is RCA male jacks that you might have to convert to female. The unit is powered by the HDMI input, although for a long cable run you might need to add a power adapter. The unit is set up to use an adapter but you'd need to get it from a place like Radio Shack.
Check it out at www.curtpalme.com. I no longer need the unit as I just bought a new plasma so if your interested, I'll sell you this one for $80.00 including shipping. It works very well and makes a noticeable difference in the component video picture quality.