Windows has an internal API (Application Programming Interface) that third-party applications such as Defraggler can use to move and delete files. This API works the same way Windows does when it moves or deletes files, and is very safe. Even if the PC crashes or you experience a power failure during defragmentation, Windows can usually complete the file operations or cancel them without file corruption.
Software firewalls are a good choice for single computers, and they work well with Windows 98, Windows Me, and Windows 2000. (Windows Vista and Windows XP both have a built-in firewall, so an additional firewall is not necessary.)Software firewalls are also available from other software companies. spam link in sig removed and member banned