|You mean the MS stuff?|
I've had a look and can't really think of a better way of explaining it.
Best bet is to make start and see if/where you get stuck.
First backup system.ini to be on the safe side, like this:
Select Command Prompt (rather than Safe Mode).
On the black screen that arrives type this:
copy c:\windows\system.ini c:\windows\system.wft
Make sure it is "exactly" right - including the two spaces then hit Enter key.
You should get something along the lines "1 file copied".
If so, you can then proceed to the MS stuff.
From the same screen type:
cd windows (then hit Enter key).
edit system.ini (and hit Enter).
You should get a blue screen with the name System.ini at the top and a stack of white writing. If so then you have to scroll down to where it says [386Enh] and put your new line underneath it.
This is where it might get a tad tricky because you might not have a mouse. You can edit using the keyboard but if you get stuck then just close the screen without saving and we'll try to go through it step by step. Nothing will have changed and we can have another go.
For my information, can you tell me how much RAM you have installed? If it's more than 512M that could be the issue and there might be a simpler way forward, although it would be odd if your computer has only just got snotty about it.
Always pop back and let us know the outcome - thanks