Q: I know there are wireless technologies out there that allow you to connect everywhere, but I want to be able to use my laptop with the...

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Q: I know there are wireless technologies out there that allow you to connect everywhere, but I want to be able to use my laptop with the same freedom as my cellphone. I have heard that Bluetooth technology can turn your cellphone into a modem for your laptop. How does that work?

— Jordan Poloskey

A: You don’t need Bluetooth to use your cellphone as a modem. Bluetooth is a close-range wireless technology, used most commonly to connect devices to each other without cables.

Cellphones with Bluetooth, for example, allow you to use headsets with the phone without a cable connection. Laptops with Bluetooth allow you to print to selected printers over wireless, likewise without cables.

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You can use some cellphones as modems, but it’s not Bluetooth that allows that to happen. You need to check with your cellphone service provider to see if your phone can serve as a modem.

Q: I have Norton Internet Security 2005 on my computer. When it runs the full-system scan it identifies a program called “bundle.exe” as an adware threat, but it does not delete it. It will tell me the path to find it and when I go there and try to manually delete it I cannot do so. It tells me access is denied. If this is just adware why can’t I delete it? If Norton detects it, why can’t Norton get rid of it?

— Steve Tackett

A: Bundle.exe is, in fact, a piece of adware. Most spyware/adware programs will remove it. Generally, adequate security requires several programs. Norton Internet Security can be a valuable piece of the puzzle, but no single program can provide complete protection. I’d recommend installing additional adware protection, such as Lavasoft’s Ad-Aware or Computer Associates’ PestPatrol.

Q: A few weeks ago I downloaded Mozilla’s Firefox. I’ve had no problems and Firefox seems to respond quicker than Internet Explorer. Assuming you’ve taken it for a test drive I’m curious what you think about Firefox. (I realize mentioning anything but Internet Explorer and Outlook/Outlook Express is blasphemous in Redmond, but I don’t live within three miles of Bill’s office anymore, although I still have a house there.)

— Tom Hennessy, DeSoto, Texas

A. Actually, there’s no pressure felt from Redmond on anything. I regularly use Firefox and, generally, it does seem faster to me. I use it because it’s cleaner and I like its extension-management features. Be aware, however, that it is susceptible to some of the same kinds of vulnerabilities as Internet Explorer.

Q: I made the mistake of downloading some freeware that became corrupted and won’t uninstall using Windows XP’s Add/Remove software tool. I have not been allowed to manually delete a .dll file that is interpreted as being active. I tried to reinstall the program hoping that if it installed correctly, I could then uninstall it. Unfortunately, the new download merely tries to uninstall the previous version, also with no success.

I have read that uninstall utilities look at log files to know what to uninstall and I seem to have such a file in the Windows registry, but I don’t know if it is corrupted. Is there anything that will correct this?

— Mike, Kent

A: I’m afraid I can’t offer much help about the application or about the Windows registry without a hands-on look.

But if you need to delete a specific file that Windows won’t allow, you might try MoveOnBoot, a freeware program that allows you to delete files before Windows loads. You can get more details about MoveOnBoot at www.snapfiles.com/get/moveonboot.html.

Questions for Patrick Marshall may be sent by e-mail to pmarshall@seattletimes.com or pgmarshall@pgmarshall.net, or by mail at Q&A/Technology, The Seattle Times, P.O. Box 70, Seattle, WA 98111. More columns at www.seattletimes.com/columnists.