Vista Explorer Send To Menu

You right-click a file and choose Send To, and then have to wait for about 30 seconds for explorer to respond again. Annoying! so how do we fix it?

Open up Explorer and then type in the following into the address/location bar:
shell:sendto

You'll see the contents of the Send To folder, where you can delete anything that shouldn't be there or you don't use.
Hide Drive Letters With Registry Hack
You can remove the drive letters in the Send To menu with a quick registry hack.

Download DisableSendToDrives Registry Hack
source : http://www.howtogeek.com/howto/windows-vista/why-does-my-windows-vista-explorer-send-to-menu-hang-or-open-slowly/