Not sure if Freeola want technical posts on all IT subjects, but this may help the web-builder with a computer issue whilst they're building their sites....

Anyway, I was asked by a guy in work how to minimise the amount of hard disk space used to create restore points in Windows Vista (XP was a lot easier) and my research concludes at this:

1. Click Start
2. Click on All Programs
3. Click on Accesories
4. Right click on Command Prompt and select ‘Run as administrator’
5. Type:    vssadmin list shadowstorage     and press enter.
This will tell you the current total memory allocated to System Restore.

To resize:

Do the same as above but for step 5 type:
vssadmin Resize ShadowStorage  /For=C:  /On=C:  /Max Size=10GB   and press enter.
(Replace 10GB with whatever size you want, remembering that the smaller the size, the less restore points will be created)
You should then get a message saying “Successfully resized the shadow copy storage association

Hope this helps someone :)