How to delete registry keys?

It is possible to delete your email address??

How do you delete your youtube account?

How do you delete music from your zune?

How do you delete a myspace??!!!??

My email account was deleted and I want to re activate it. How do I do that with only the email address?

I would like to delete my hi5 account but I forget my password,what can I do to delete it?

Where do I find my ssid # and wep key # ??? I have a dlink and dell d610 !!!

How do you check deleted email messages on your computer? Can they be recovered?

How do I tell my computer to delete everything before I close out?

how do I make a side arrow on my keyboard? I need to know