My entire house is furnished with antiques. I don't collect china nor glass though. Here's a good site to use...
Collector's Price Guide, Search Antiques & Collectibles Price Info by Category
And another....
Antique and Collectible Mall: TIAS.com: Antiques and Collectibles
You can browse ebay also. I will tell you the really highly collected antiques are still selling for a pretty penny on there.
You can also hire an apprasier to come to your home.
The silver may be worth more selling it to be melted down.
Good luck treasure hunting...hope you have an original rembrandt hidden there. LOL