Thank you for your reply, ollydgb.
I installed the "nightly" from 10/23/2012 and the 7.5 gdb as you suggested, and I get the focus arrow only sometimes.
When I "step into" a function call that returns void, such as:
Initialize();
... the file containing that function opens and the focus arrow moves to the appropriate line.
However, when I "step into" a function that returns an int to main(), such as:
cnt = func1(num);
... the file containing that function does not open. Even if I open the file manually, the focus arrow does not show up in this function.
Please let me know if you have an idea as to what I am doing wrong in C::B.
Again, thank you.