AbleCommerce Shopping Cart Software

hii,
Can we Reinstall ablecommerce7 with same licence key on server..
Actually currently i have installed it on server with licence key...
but due to some problem i will have to reinstall it again..
my site is like "www.atulkhare.com/commerce" , i have created their virtual directory commerce that is wrong i want to open this with http://www.atulkhare.com only want to remove "commerce".....can
you help me to solve this problem?
and also guide me about ReInstallation...
special thanks for solve my previous problemss...

Thank And Regard
Atul khare

There is no difference between installation and re-installation in your case.

Just install AC on http://www.atulkhare.com like you installed for the first time. When it asks for the license key provide the license key that was given to you.