Well you open your save that you backed up, and search for the last instance of your character name in the text search.
It should be about the 5th time you next, you should be at the bottom of your save game.
Then get an copy of the Items list look for what you want, if your just starting a new character, I would suggest looking/serching for Health potions then give yourself say 50 of them as a test.
So your doing a search starting form the last time your character name, looking for 3c 00 (heal potion) and then you will see a string of pairs of zeros, somewhere in the next pair of about 8 zeros you will see a number.
Now your looking at Hex numbers now, so you must convert them with a Hex converter, if you going to give yourself 50 then the Hex equivlent for 50 is 32.
If you starting character has 5 Heal potions then you will see a pair of zeros that look like this 05, that is actually a Hex number.
Hex does not differ till the number 10, so after 9 instead of 10 it is 0A.
So after the 3c 00 the pair of numbers with the 05 (example) needs to be changed to 32, then save.
Basicly once you have given yourself 50 potions then you can drop 49 of them on the ground and save your game.
Search again for the 3c 00 then change that number to the number you want you found listed in the Items list.
Return to the game pick up the 49 potions then drop 48 save and look for 3c 00 and repeat.
That is basicly how you do it without understanding Hex and conversions.
It can be much more complicated and you would need to learn about Hex by reading on the Net or if someone here wants to expalin it.
