Define proxy in windows 7

[Om Prakash]

Hi,

I am wondering how to define proxy setting in env variable on windows 7, 
I want this so i can use pip to pull packages for me, the same setting 
though working earlier on windows xp.

http_proxy = "proxy name:80"

now this same setting doesn't work, i tried doing in the cmd.exe prompt.

set http_proxy "proxy name:80"

P.S. i am a normal user and don't have admin privleges.

Regards,
Om Prakash