To do this, you must use tlbimp with the key / keyfile: FileName or / keycontainer: FileName. Or I think you could do this in the IDE by simply adding a COM link (a checkbox was selected to apply the same key to that one).
sn -k new.snk
tlbimp shdocvw.dll /out:axshdocvw.dll /keyfile:new.snk
, ...
, WebBrowser , ...