I don't understand why you think you need your "Admin password" to
"wirelessly install things" or what you mean by that, but here's my
standard "so you've lost your password" answer. If this isn't what you
wanted to know, then post back with a clearer description of what you're
trying to do.

If you have forgotten your password, if you have another user account with
administrative privileges you can log into that account and change your
original user account's password from the User Accounts applet in Control
Panel. If you don't have another account like this set up or don't have the
password to it, you'll need to log into the built-in Administrator account.
In XP Home, boot the computer into Safe Mode. Do this by repeatedly tapping
the F8 key as the computer is starting up. This will get you to the right
menu. Navigate using your Up arrow key; the mouse will not work here. Once
in Safe Mode, you will see the normally hidden Administrator account. The
default password is a blank.

In XP Pro, you do not need to go into Safe Mode. At the Welcome Screen, do
Ctrl-Alt-Del twice to get the classic Windows logon box. Type in
"Administrator" and whatever password you assigned when you set up Windows.

If you reset the built-in Administrator account's password in Home or have
Pro and don't remember the password, use NTpasswd to change the built-in
Administrator account's password to a blank.

http://home.eunet.no/~pnordahl/ntpasswd/

Then go to the User Accounts applet in Control Panel and set passwords that
you will remember and make other desired changes. WRITE THE PASSWORDS DOWN
AND PUT THEM SOMEWHERE YOU WON'T LOSE THEM.

Malke