I have problems about Excel VBA. How to convert the data in column and row to *.DAT format.
What
is DAT format? As far as I can recall, in the thread to which you appended your question, we were just using the "DAT" extension to refer to any general data file that we happened to be using, regardless of the data format. You need to be specific as to what it is you want to convert from, and to.
As for e-mail addresses, please restrict questions to the forum here. The site guidelines forbid posting of your own or anyone else's e-mail address (which is why yours was edited out), and we don't hand out our addresses. Also, questions should be handled through the forum so that others in the future can find the answers.