Thank you very much for your help again! Yes, I do understand your point and it is quite well making sense. I have downloaded your file, copied and pasted into my Mathematica 7 notepad and executed. But instead, the status is in the running mode for a quite long time up to now. Does this mean that I need to upgrade my Mathematica 7 into 8 to perform this task? In addition, may I ask you for the output for this code if possible since I cannot run this with my Mathematica 7 version but I really need the output quite much..? Thank you very much, really!

I do really appreciate your help. However, even though I followed your steps, still nothing changed with my error messages..I could not identify any colored brackets at all but the errors remained the same..In addition, I re-edited the error message again since the contents I uploaded before seemed to be a mistakenly cut-off version of the first error, but the contents remains the same...