Hello
I'm glad to see that you tried yourself before asking, this why I am replying to you.
All you have to do is to search for your Current Money amount as a 4 Bytes value using CE.
Then make a link or an enchantement, change the "Value:" field in CE with you new amount of gold, and press "Next Scan", retype your new money value in CE, and re press next Scan a dozen of times.
If you want it to be free:
Then when you have your money value as ps_game and game.exe side in CE,attach the debbuger, search for all values that access, you'll find a "Jump if Greater or Equal", simply replace it with a simple JMP.
Else:
You can also replace all the gold values but it will take a bit more of time to do.
You have to do it with Game.exe side first, and then ps_game.exe.
If you still have an issue, my skype is on the left.