Should I throw The Wine Away?

[imazdaman]

Good morning. I have a friend who grew up w/ the owner of Caymus vinyard. He no longer drinks. I did some Major Automotive repair for him and asked if the wife and I like wine. I said oh ya! I am skeptictal on drinking them. (should i serv it to my wife first?):-) just kiding. The first one is Camus 1996 Napa Valley Sauvignon Blanc, 2nd one is Camus 1999 California Zinfandel, and the last (i believe to be from same celler) is Conundrum Vintage 2000 california white table wine. These have been kept in the back of closet in the dark. I', sure the temp has not been stable, but low to no light. Thx for the read.