Double Opt-in Registration modifications

I am working through the tutorial on creating double opt-in registration for one of our sites.
We want to make 2 modifications to this process and I'm looking for some input on how to accomplish this.

1. we want to eliminate some of the fields on the simple registration.

All we want for somebody to sign up is their Email (required ), First Name (required), Last Name (Required ) and Telephone (Not required )

--- we do NOT want to include address, city, state, country, fields in the registration process..... or at the very least, we do NOT want them to be required fields. ... this second option might actually be better.




2. We want to add a Checkbox ( Required ) for them to acknowledge that they have read and agree to our Terms and Conditions, before allowing them access to the restricted content of the site.

Any tips on how to accomplish this would be appreciated.