A couple easy questions

[BirdOPrey5]

To get things in your postbit in cells you need to edit your postbit_legacy template. You can find things like join date by searching for "join_date" in the code... you use basic HTML (tables probably) to put the code into table cells.

You don't HAVE to make people confirm their email address - in admin cp -> vbulletin options -> User Registration Options -> set Verify Email Address to "No" - New users will be able to post immediately after registering.

However if you are consistently having slow emails and you're sure it's your side you should contact your host for help.