System Restore; Configuring Restore Point

Hello,
I'm running Vista Home Premium on my computer and I've recently had a bunch of problems with my drivers and registry. I've only just (about a month later) realised I can do a system restore, but I can't figure out how to create a restore point for that particular time. All the stored restore points are from the last few days and any that I create are for the immediate time.

So basically I want to restore my system to how it was working a month ago.

Any help would be greatly appreciated :)