If you have a CD Burner (also known as CD Writer, CDRW or whatever) you can burn movies in the MPG format (they have file names like movie.mpg, or movie.mpeg - probably the most common movie file format these days) to a CD as a VCD. A number of programs will do this, including Nero Burning Rom, and Adaptec EZ CD Creator (which doesn't do as good a job IMO). The important word to remember is 'VCD', you have to burn it in that format. Most (but not all) DVD players can read VCD's, (VCD stands for Video CD).
On the common person's PC, a great deal of memory and processing power is taken up by a ton of useless little programs that are always running and eating into your available resources. One way to deal with these, if you are running WinXP or Win2k, is to hit Ctrl-Alt-Del and try to kill as many processes as possible. WinXP will take you to the right place to do this when you hit Ctrl-Alt-Del, but in Win2k you will have to select 'Task Manager' after hitting Ctrl-alt-del. Don't try this in Win95 or 98, as You can easily kill the wrong process, forcing you to reboot.
WinXP/Win2k won't let you kill the really important stuff, so not to worry. Just highlight every item line by line and click 'End Process'. Some will deactivate, and some will give you an error (which is good), as they are protected processes needed to run your system, and it won't allow you to deactivate them. Just make sure not to try and deactivate 'explorer' as it will let you, and this will leave you without a desktop until you reboot. Don't be afraid though - you can't do anything here that you can't fix with a simple reboot. Doing this stuff will free up a remarkable amount of processing power on most people's PC's.
Also, you should take a look at your system tray (that area on your taskbar -often next to the clock - that contains all the little icons) Try and right-click/exit on every one of those Icons that you can to free up processing power.
In Win2k and XP, unfortunately, a large number of useless (to most people) tasks run by default as 'services'. They can be deactivated, but a wrong move can create a few problems, so I won't go into it at this moment.