I have firefox 3, would like to delete internet explorer to save space.?

There are so many Pros and Cons regarding the Firefox 3. Firefox 3 has alot of spam which causes your computer to slow down. The Pro is that Modzilla Firefox 3 comes with an anti-spyware program which helps prevent spam from slowing down your computer. Instead of getting Modzilla Foxfire download the Google Chrome. This program is so fast, I am using it now!