There are two ways to work with the assembly cache. One is the Windows Explorer, which has a shell extension that displays the cache and allows you to manipulate the entries. If you explore the c:\winnt\assembly directory, you can display the current cache:
Alternately you can use the gacutil utility, which allows you to install, uninstall, and list the contents of the global assembly cache. The following:
gacutil /i e.dll
gacutil /u e
uninstalls all assemblies with the name
gacutil /u e,ver=0.0.0.0
uninstalls only the assembly
e that matches the version number.