When you post your questions, make sure you give a thorough description of the symptoms you're experiencing. The more information you give, the easier it will be for other people to help you. For example, you'll want to describe your hardware configuration as much as possible and which Operating System you're running. It is also important to describe any software that you've recently installed, since unwanted software often comes bundled with other applications. Be sure to describe any pop-up windows that have suddenly started appearing on your desktop and, if possible, include a screenshot of them.

Remember not to post anything that you'd have a problem with millions of people seeing -- particularly malicious people who would take advantage of personal information. So do NOT provide account names, email addresses, or passwords.

Even after posting your question, don't be disappointed if someone tells you to download and run free programs like Ad-aware, Spybot Search & Destroy and HijackThis. Generally, if you suspect that your computer is infested with adware or spyware, this is the best advice.