Search for the wine on the Wine Spectator site. There are reviews of two Marimar Torres 2000 Chardonnays, the 2000 Russian River Valley Don Miguel Vineyard and the 2000 Russian River Valley Don Miguel Vineyard Dobles Lías. Laube said to drink the first of these through 2006, but said to drink the latter "now" (that was in 2002).
However, I suspect that if the wine has been in the fridge for all or most of the time you've had it, it's probably still good. I believe the drinking window information provided by WS and other reviewers assumes that the wine will be kept at normal cellar temperature, 55 to 60 degrees. Wine ages much slower at cooler temperatures.