Many times you need to clean the cache, history and temp files to free some space of your system. Because regular browsing stroes a lot of data as a history and cache. There are many tools available which does the same work for you at one click. Disk Cleaner Portable is also one of those nice tools which clean your hardisk quickly.
This tool is free and opensource. select the items you would like to clean, press the clean button, and you're done.
This tool works fine on all versions of windows including XP/Vista/7
Download it here:
http://www.diskcleaner.nl/download