restoring to orginal vista basic after installing windows 7

hi i have a acer aspire 5535 i have installed windows 7 but i want to restore widows vista how ever i never thaught about making a image disc and acer dont provide instalion cds. BUT there is a reserved drive on my hard drive 9.77gb which states a healthy restore point.
is this posible to do?
if so how can i do this?
or if not what is my best option?

Hello,

If the computer came with Vista, then you can perform the recovery.

Follow the instructions here:

http://www.GeekPolice.net/tutorials-guides-f13/acer-system-recovery-partition-hotkey-instructions-erecovery-t7449.htm