FYI...While the original 37" plasma monitor in earlier Alpines should have a decent lifespan, availability of a replacement with the same dimension and mounting is becoming limited, as Panasonic has discontinued such models.
From what I've found, our monitors were superceded by the TH37PH9UK, then the TH37PH10UK, both of which stopped shipping a few years ago.
I found the latter model at a pretty good price ($579 plus shipping):
Panasonic | TH-37PH10UK 37" Plasma Display | TH-37PH10UK
The newer models were upgraded with higher contrast ratios and higher definition (720P native resolution as compared to 480P in our original monitors).
The TH37PH10UK will accept an optional dual HDMI input card (#TY-FB10HMD), which I found on eBay for a very reasonable $55:
Panasonic Plasma Dual HDMI Card , TY-FB10HMD - eBay (item 110541461539 end time Jul-02-10 09:58:53 PDT)
One advantage of the dual HDMI card is simpler, much less bulky cable connection, than the orginal monitor with a single component video input.
With my original monitor, since I wanted to use optimal component video connections from both DVD and satellite receiver, I added a switchbox which required stuffing a very large bundle of cables in the limited space available.
Hooked it all up yesterday and added a BluRay player. It bolts up and works fine and has a very nice picture.