This is not really a cheat but this is what i did:

I used the following:

Config 1:
1. ring of strength + 15
2. ring of strength + 15
3. Amulet of strength + 15

This gives you at least +45 Strength
(450 pts) to carry.
So you can carry a complete house or so!!!

And my second config:
1. ring of constitution +15
2. ring of constitution +15
3. Amulet of dexterity +15

This gives you a lot hitpoints and additional Armorpoints.(As second config you can use whatever you like!)

The Cool thing is that Items that you already carry will NOT be dropped if you unequip the rings and amulet of strength. You will still carry them!!!!!

This means that you can get Something like This:
Carrying: 480/160 (480 of 160) !!!!!!
Now you normally are tripple Overwighted but it doesnt matter, you can still move, cast spells and fight!!!!!

So you only need to put the Rings of strength on again if you want to pick something up!!!!! For all other things (fighting...) i used the second config.

Works wonderfully if you need a LOT of potions and a Lot of HP too!!!!!!!!!

I know my English is not good at all, but i hope i could explain my trick to you