Some tips to help game performance:1 -> Go to www.blizzard.com/support and read the FAQ on speeding up the game. It will give you tips on how to set file usage, defragging, etc...
2 -> The old standby: Update your drivers for your video card...
3 -> RAM is dirt cheap ATM so it might be a good time to pick up a 128/256 stick of it. RAM is THE single biggest speed cruncher for Diablo 2. You cannot have enough of it.
4 -> Copy the copy all the *.mpq files from BOTH CD's (D2 and LOD) to the root D2 directory. The game will generally go looking there before the CD. Assuming of course you have the hard drive space for it. If not, see #3 above, but substitute the word RAM with Hard Drive. 
5 -> If you are playing in 800*600 resolution, drop back to 640*480.
6 -> You can run D2 in a window (just like your internet browser), by right clicking on the icon for D2, selecting properties, and then going to the TARGET line and adding a -w at the end of it like this;
"C:\Diablo II\Diablo II.exe" -w
That should get you started.
Iowan: I downloaded Cacheman and it seems pretty nifty. Even with 198MB of RAM, D2 will take me down to 30% resources. 
Thanks for the link!
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Good, Bad, Ive got the gun.
Darkness Weaves
[This message has been edited by RexxLaww (edited 21 July 2001).]