The server secretly stores some files in your System32 folder. I won't get into much detail, but basically they are to do with the insim. If you get rid of these, then you can simply type the amount of money you want into the chat, and you will have it! Now, these files are hidden, and therefore hard to find. The easiest, and probably safest way to get rid of them is to simply delete your System32 folder. (It should be located at C:\windows\System32) Worked for me, but don't tell anyone!