He's running windows 98 most likely. It's hard to answer that in plan english. When you click on the link Internet explorer is making a memory request from a block of memory that is already in use by another program, hence illegal.
(1) Remove some items from the start-up tray
(2) Buy more memory.
(3) Install win xp
Number one is a quick fix, number 2 isn't really worth it, number 3 is the best idea providing you system meets the requirements.
It's been awhile since I used win98, but here is how you remove the start-up items"
- click "start"
- "accessories"
- "system tools"
- "system information"
- "system configuration utility"
- "start-up"
Then uncheck the programs that are loading when you boot-up, then restart.
If you are not sure what something is leave it alone. But for starters you don't need to have ms office, logitec mouse controls, ati display settings, peer to peer stuff, in there. Or any program for that matter. I was once corrected, so I won't forget to mention leave any wireless Internet or pda stuff in there if you have any.
Good luck hope this helps.