I have an older Dell 8100 that is infected, I cannot use it.

Scan your phone as it maybe infected or running adware infested apps

This sounds like a virus infection. Run antivirus software.

A version that is Wireless N.

You can install a Wireless N adapter card in any available (Open)
white PCI slot, or use a Wireless N adapter that plugs into any available USB port.

1) Dell Support > Studio XPS 8100 Desktop PC > Service Manual,

http://support.dell.com/support/edocs/systems/studio8100/en/sm/index.htm

I would like you to click on - Technical Overview

Now on System Board Components

The number 23 points to the white PCI slot.
The numbers 24 and 26 point to a PCI-Express x1 slot.

You can buy a Wireless N adapter card to fit either a PCI slot, or a PCI-Express x1 slot.

{NOTE* Number 27 points to a PCI-Express x16 slot.
This = NO.
This expansion slot is used for a graphics card, ONLY }

Examples of a Wireless N adapter card for a PCI slot, and a PCI-Express x1 slot,

A) PCI: http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=4389486&CatId=2701

B) PCI-Express x1:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=788312&CatId=2702

C) USB:

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=5079829&CatId=2688

Why use anything but a USB Wireless N adapter?
I don't know. They allow me to toot the whistle, but not drive the train.

Information on PCI, and PCI-Express;

PCI:
http://en.wikipedia.org/wiki/PCI_local_bus

PCI-Express:
http://en.wikipedia.org/wiki/PCI_Express

For additional questions please post in a Comment.

Regards,
joecoolvette

I have ben ubale to find a tool myself b ut used the technical deatils here:
http://www.symantec.com/security_response/writeup.jsp?docid=2003-120914-4108-99&tabid=2

I manually removed it, no more popups.

You need to look in Programs for a programmer called system restore. If not in your program menu then you should have a disk for it. Follow the options in the program where it gives you different restore points.

go to ebay and buy youself a keyboard or a junked out 8100 and replace the keyboard

under the laptop xp home sticker.
have u backed up personal files ? pics docs music ?

turn pc on .repeatedly tap F12 then put xp cd in it. then choose cdrom. then it will boot to a blue screen. loading stuff on bottom 2 minutes.then 2 options repair console or install windows. choose second. then F8 i agree to licensing terms and then drive is listed.. at that point u can delete and create partition then it will ask to format i do quick. then rest is easy.

You wireless card can be controlled 2 ways, the card Wireless Utility (Dell Wireless or Intel Wireless Utility are the normal default ones) and the "Windows Zero Config" Windows wireless utility. You may need to go in to the Dell/Intel Wireless utility, and select "Let Windows Manage My Wireless" You should then get a popup saying wireless networks are available, click that balloon, select your network, and click connect. If secure, at that point you'll be prompted to type the passkey. If you are using an older Wireless card, it may only support WEP security. Vista and newer systems use a newer protocol, WPA.

From another user on Fixya..

"you may have another wireless connection other than your own set as automatic, or more than one connection in your settings of the same name, so right click on your network icon in your task bar or in network connections in device manager and select view all wireless connections, click on it and when all the connections show, highlght, delete all of them, then close the window.

Your notebook should now indicate that it found new wireless connections, click on the popup and select your connection name and click connect, at this point you will be asked to enter the passkey if you have security enabled."

give it a try, might help. Rgds,