QUESTION: Since I reinstalled Windows 2000, my CD and DVD drives have become read-only, refusing to write to blank media. I've tried using Geniesoft and Paragon disc-burning software to no avail. Anthony Isaacs

HELPROOM ANSWER: It may be that your CD-burning software isn't Windows 2000-compatible, Anthony. Mainstream support for Windows 2000 ended some time ago; extended support (urgent security fixes) will be discontinued this July. Software companies usually discontinue compatible products once mainstream support ends.

Two free applications you could try that do still support Windows 2000 are CDBurnerXP and Deepburner Free.

If neither cures your problem, check for firmware updates at your CD and DVD drive manufacturers' websites.

Also ensure all updates are applied in Windows Update - particularly to the .Net framework. Windows 2000 predates service packs, so you'll need to manually download updates from update.microsoft.com.

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