You should go to the website of the application you are looking for and download it from there, or use the install CD/DVD. Also, if you are using Mac OS commercially and need to monitor your employees, you can use Apple Remote Desktop. This software can be purchased from the Apple website.
AnswerIt is definitely possible. First, you have to set the BIOS to halt on no errors, otherwise, it will stop the boot process.2. You have to have the opsys' network (TCP/IP I assume) working propperly.3. You have to run some sort of control program. Viral (Trojan), like Sub7 have been using this tech for ages. Windows has the Remote Help function (XP only) to utilise this tech. Other Windows need a terminal server installed. Linux has a built-in support.4. You need a client program. If you are fine with text-based interface, you use the default telnet client. If you want graphics, you need a compatible (SSH?) software. I cannot help you with this, you'll have to check a few computer magazines for the answer. Probably Putty can do it.5. If you use internet, secure transmission (SSH) is a MUST. Otherwise, you'll have your computer hacked in notime. :(AnswerLook for a VNC type product, eg www.realvnc.com. Also, TightVNC is a good option, http://www.tightvnc.com/