[platform-dev] Hwo to re-enable removed plugins(emf, xsd)

[prasenjit mukherjee <prasenjit.mukherjee@xxxxxxx>]

I accidentally clicked on "remove" button(during eclipse startup) which 
I think disabled coupel of plugins(i.e. emf and xsd). Now I dont see 
any way to re-enable those plugins. Is there any way to re-enable those 
plugins in the same workspace?
Those plugins are still located in d:\eclipse\plugins directory.  The 
plugins are enabled for newly created workspace though.
Is there a way to undo  the "Remove" action ? :(

any help is greatly appreciated.

thanks,
prasen