there is a way on Macs to delete the admin account and create a new one without having the password but it involves booting into the command line and knowing what to type. It is good for reselling macs because it gives the person you sell it to a way to set up their own account and password without having yours. However, since you seem like you are trying to get around parental controls I'm not going to post the sequence on here.
Google is your friend!
im not trying to look at porn, i just like admin right so i can do stuff.
can you install Internet Explorer on Mac?
Parental Controls aside, no, you can't install IE on it. Unless you go through the trouble of installed Windows with Bootcamp. Then, if you use IE, in Windows, on your Mac, then don't get a Mac.
Use Firefox, Camino, Safari, Opera -- anything. They're all better than IE.