Sea: What do you mean Fool-Proof?
Zeke:
Go to line 243 in 'levelup.php'. It should say ( Or look for it around line 243 ):
$article_content = "<img src='".$image."'><br>".$lang_gave."".$name." one ".$lang_unit.".<br>".$lang_levelup_encourage;
And after that add this line:
$article_content = $article_content."<br>You have received [Amount of currency Earned] [Currency Name] and now have ".$newmoney." [Currency Name]."
Change '[Amount of currency Earned]' and '[Currency Name]' to what it says. ;)
On Step 2 it tells you to put '$newmoney = $money + 10' set '$newmoney' and '$money' in the above code to whatever you put for Step 2.
Hope that Helps! :D