I have a Nice Samsung 61" DLP...

...A 360

...A PS3

...And a stupid Comcast DVR Box.

Where can I get a remote to control all these things, particularly the DVr on the cable box?

Thoughts?

This should do the trick. Seen it at best buy for 100 you could probably find a better deal online.

Harmony Advanced Universal Remote for Xbox 360

http://www.logitech.com/index.cfm/remotes/universal_remotes/devices/375&cl=us,en

This should do the trick. Seen it at best buy for 100 you could probably find a better deal online.

Harmony Advanced Universal Remote for Xbox 360

http://www.logitech.com/index.cfm/remotes/universal_remotes/devices/375&cl=us,en
This remote will not control the (Blu-tooth) PS3.

You will need a universal remote such as the Harmony X-box remote - these remotes do IR but not Blu-tooth. To allow control of the PS3 while watching a DVD or BD I use a USB dongle - the USBIRX3.
http://www.schmartz.com/main.sc

While Sony makes a remote for DVD/BD viewing on the PS3, it will not control your AV sound - nor anything else besides the PS3. Also, it has tiny black buttons on an un-lit black remote.

Yeah the dongle in the ps3 skipped my mind, you will definitely need that is well.