With the current large disks it is a huge task if you need to find something. I found a very cool tool that really helps.
"Everything" is an administrative tool that locates files and folders by filename instantly for Windows.
Unlike Windows search "Everything" initially displays every file and folder on your computer (hence the name "Everything").
You type in a search filter to limit what files and folders are displayed.
"Everything" only uses file and folder names and generally takes a few seconds to build it's database.
A fresh install of Windows XP SP2 (about 20,000 files) will take about 1 second to index.
1,000,000 files will take about 1 minute.
Best of all, It is freeware. If you use it in a professional environment and you like it, you could consider a donation to the developer.