Speed List
The first few steps to speed up a computer you have mastered (i.e. msconfig disabling start up programs, spyware removal)
2nd- The quickest and most efficient way to speed up a computure is by adding RAM
3rd- you can always modify the page files by right clicking on my computer >properties >advanced > performance > settings > advanced > change.... rule of thumb is to usually have multiples of 8 and have the maximum no more than 3 times the initial size (but first check your free space on the hard drive to see if you can use the extra space for page filing) this will help take stress off your cpu and use your free space on your hard drive as a type of virtual memory.
4th- you can delete all temp file from Documents & Settings\\local settings\Temp
5th- in your device manager under your IDE controlers make sure that your primary and secondary(if slaved) IDE channel are set to DMA if available under advanced settings this will significantly speed it up if it was previously set at PIO mode.
6th- under your Internet Explorer properties make the disk space used for temp internet file at 50MB or lower
7th- you can also set the priority of a process that is running by right clicking on a process in the processes tab under your task manager. note- this will only speed up the process you are running by setting the cpu usage higher for the process, it will not speed up the whole computer.
I know there are more tweeks here and there to speed up the computer but this is all i can think of off the top of my head and not actually working on a computer
hope this helps!