cannot resolve symbol error

i use Win2000 and i try to compile a class(firstClass) that uses another class(secondClass) but it does not recognize that class. i get the 'cannot resolve symbol' error. both classes are in the same directory. secondClass is already successfully compiled. spelling and case sensitivity issues are resolved. what's wrong?

[339 byte] By [javasoc] at [2007-9-26 2:39:20]