HexCheats:

To find what your looking for in the save games
folder of Z:SS you'll find files of the 'sz2' variety. NOT the 'sz2.snf' file. Take this file '?????.sz2' and open it with "HexEdit" by Geoffrey Prewett. Then search for the floating point value of 10,000 for the first scenario save. To search with hex the look for the code 00401C46 and right beside it will be another 00401C46 and the a few numbers down the row you'll find it again.

This is where the 10,000 credits are for the first scenario game save.

Change ALL 3 of these values to 00247449 and you'll have 1,000,000 credits when you return and reload this game. Remember not to change only one or two of the above locations or it won't work. You have to change all 3.

Below is a list of the even credits from 10,000 on up to 15,000:

10,000 = 00401C46
11,000 = 00E02B46
12,000 = 00803B46
13,000 = 00204B46
14,000 = 00C05A46
15,000 = 00606A46

If you want more of the above then goto the web and find HexEdit, dowload it and use it. To find the floating point value download WinHack and use its calculator feature which has the float integer value which is where you put the value and in the float hex value you'll see the code OF COURSE backwards.