Keep the Windows operating system updated. System patches are periodically released to fix security problems. You can do this by going to Control Panel, System, Automatic Updates, and select the automatically download updates option then set the update frequency and schedule time. This should be done at least once a week. Doing updates frequently also keeps the time involved smaller as the files to download are smaller.

Turn on the network firewall option that came with the operating system or acquire a firewall software package. For Windows XP you can do this by going to Control Panel, Network Connections, right click on the Network Name, select Properties, Advanced, and check the box to protect the computer from Internet access.

Don't open e-mail from an unknown source; deleting it without reading it limits the system's exposure to viruses. But, if you do open it, don't open associated attachments, if any. E-mail and attachments are techniques used to gain entry into your system and launch a virus.

Don’t open attachments with odd names and file extensions, even from a known e-mail user. Some hackers use stolen e-mail addresses to gain your trust.

Don't download programs from Web sites, unless you know and trust the source. Running a program is another technique used to introduce a virus to the system.

Periodically review LTS's Security web site for current issues and best practices.