How to set 'emailonpm'/'save copy'(PM's) on for all new users?

What do I need to change to make this happen?
I guess it's a small change.

<edit>
Actually I'm looking for the same thing with regards to sending PM's; I'd like to have 'Save copy' off by default (most people don't even notice a copy is being saved. THis results in a lot of useless PM messages)
</edit>

Thanks in advance

[amykhar]

Edit the registration templates. register_adult and register_coppa are the ones you want. Look for the field in question and change the default value.

[mauce]

THanks, but how about the 'save copy' question (please refer to the editted section in my initial post).

thanks in advance

[amykhar]

Just edit the priv_sendprivmsg template

Change this:
<br><input type="checkbox" name="savecopy" value="yes" checked>

To this:
<br><input type="checkbox" name="savecopy" value="yes">

[mauce]

ok done, thanks for our help