One of the biggest security holes and the most buggy pieces of any windows system is the windows explorer file browser.
One of the best Windows Explorer Replacements is the Free A43 file browser system.
Small, Fast and loaded with features, this is the perfect explorer replacement.
* Integrated text editor with unlimited size. Dynamic highlighting for the web.
* Integrated zip/unzip features. Simply drag-n-drop files or click a button. You can also turn your zip archives into self-extracting archives the same way.
* Integrated file search to quickly locate and jump to those lost files.
* Integrated quick launch area for fast access to the programs you use the most.
* Favorite buttons to quickly open those often used folders.
* Dual-pane view for those that demand speed in file management.
* Requires no installation, no data is written to the system registry. A43's configuration information is saved in a local .ini file.
* Keep it on your pen/jump drive and take it where ever you go.
http://www.primitus.us/a43/