Type: cheat (slow down ball movement)

Look in the /zuma deluxe!/levels/ folder for a file called "levels.xml" and open it 
using Notepad (make a backup copy of it first).

Scroll halfway down until you see the following line:

Settings id="lvl11" speed="0.5" start="35" score="1000" repeat= (etc…) 

lvl11 means level 1-1. So, if you want to slow down the speed of the balls 
for this level.

All you have to do is change the speed setting from 0.5 to 0.2 and then exit and 
save.

If you're stuck on a higher level, say 12-7, and then just go a few lines lower to 
where it says lvl127

And change its speed setting to 0.2 and save.

Note: don't confuse the lvl11 line above with the level11 line on the same page.