Putting dll into gac

Question

Hi,
I am trying to put a dll to GAC. The assembly is signed.
 1.I tried draging and droping (nothing happens)
 2. I tried command gacutil /i abc.dll, from visual studio command prompt.
It says Assembly successfully added to the cache but when I open windows\Assembly folder, I cant see my dll.
I am using windows xp professional OS.
Could anyone please let me know where I am doign wrong?
Thanks.
Regards,