Changing the forum date/registration date?

[Kpod]

I want to make it look like my forums been open for some years, is there some way of changing the registration date of users instead of going into admincp and editing there account join date?

I also want to make my posts abit more old so when I post them today i can make it so it looks like it's a year old?

 

[Kpod]

Bumpy...