Removing itemes from auto entry lists

How do I remove names from auto entry list?  Whenever a field asks me to enter my name a list appears that not only contains my name but also other names.  For example, I was once looking to see if an old aquaintence had died so I entered his name in the social security death list.  Now whenever I am filling out a form, and I'm asked for my first name, and I double click the field his first name appears along with mine. The same thing happens when I'm asked to fill in my last name; his last name appears in the list. Also, how do I remove items from a search list?  For example, if I am searching the internet for something and I misspell an item--I do that a lot--that misspelled word remains in the list.  When it comes to computers, I am first to admit that I am dumb as a rock, so I am hopeing that someone can tell me how to remedy this problem.

PS. What I'm filling out are job applications.  If it makes a difference, my computer is a SONY VAIO with Windows 2000xp home version.

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