Does anybody know what remote codes will work with the 990 remote on Mitsubishi TVs, a Denon 2910 DVD Player, and a Nakamichi MB-8 CD Changer? I didn't even see any codes listed for Mitsubishi TVs, which I find extremely hard to believe as big a manufacturer as they are.

Also, I have a Denon MD recorder that the 990 remote will control, but not my Denon 2910 DVD player. Anybody have any suggestions?
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Pioneer SC-1522-k Pre/Pro
Emotiva UPA-500 5-ch Amp
DISH-HD Hopper
Harman/Kardon DVD-48
LG 42" 1080P LCD HDTV
Elan THP-650LS LCRs
Elan Di-pole Surrounds
Polk Audio DSWPro1000 Sub
Oppo BDP-83
Denon DMD-1000 Minidisc
Denon DRS-810 3-Head Deck
Rega RP-1 Turntable w/Ortofon 2M Red MM Cart
JVC SR-VD400US D-VHS VCR
Audioqest/Outlaw/DH Labs
APC Surge Protector