How do I show extensions in Win7 Explorer?

[milomak]

EDIT: http://malektips.com/windows-7-view-file-extensions.html

 

[TowerGuru]

It seems its the same process as win xp to switch it on? I Dont know how people can use their computers with this off... Irritates me to no end not knowing wat the file extension is.

 

[DJNgoma]

It seems its the same process as win xp to switch it on? I Dont know how people can use their computers with this off... Irritates me to no end not knowing wat the file extension is.

Especially that Vista put ease on renaming a file which only selects everything before the extension, it is kind of pointless not showing the extensions.