Menu ID for 'system' notice pages?

My client wants to have specific modules appear on the 'Your account is now active. You may now log in!' and (possibly) the page that displays that says "go check your email" (sorry, don't have that one open).

I've searched here and through the code and can't determine IF there is any way to do that. I just need to add a 'render module position' line of code (or something similar).

The 'you may log in' page has this address:
Is there any way to do this?

That's the confirmation URL sent with the Pending email as configured within CB > Configuration > Registration. The best I can suggest is to create a Joomla menu item to CBs profile page that's public and published then append its Itemid to the [CONFIRM] substitution in the Pending email. Next assign modules to that menu item. Example substitute usage as follows.

[CONFIRM]&Itemid=42

Aside from that, no there's no way to do it as that task does not have a menutype. With CB 2.0 there's new triggers added and you'll be able to redirect easily when an account becomes active using CB Auto Actions. So you could for example with CB 2.0 redirect to a Joomla content article with custom article text and modules displayed as needed.