Baku is a freeware tool that could be use to clean up your PC. The three main features of Baku are remove unwanted files, remove invalid Registry keys, and remove Most Recently Used (MRU) lists.
Baku's first feature - search for unneeded files - is great for searching and remove empty folders, 'History' folder contents, 'Recent documents' folder contents, 'Temp' folder contents, temporary internet files, and cookies. Besides, it will also searches for Windows log files, shortcuts to missing files and folders, and user specified file types. Baku will also implements the standard DOD 5220.22-M, in order to make sure that the deleted data will not be recovered.
As for the registry, Baku's second feature could be used to removes unused and obsolete keys, including ActiveX/COM, Application Paths, Fonts, Help files, Icon files, Sound files, Uninstall Programs and Windows Installer. Baku will automatically backup the registry before any changes are made.
The last optional feature of Baku is the MRU lists cleaner using heuristic based scanning. MRU lists supported by Baku includes Media Player, eMule, Firefox, Opera, Internet Explorer, Microsoft Office, Nero, Adobe Acrobat, WinRAR, WinAce and WinZip.
Besides the three main features of Baku, Baku could also be used to backup and restore not only the entire system registry, but also the system device drivers.
link:
http://pmcchp.com/baku/index.html