There will be no limit to the number of rows of data  collected.

That is correct, the formulas will look like what you have below. One
question is if i type that in the cell, it won't accept capital
letters. In my machine, the tagnames are actually Answer1, Answer2,
etc. etc.. I guess DDE is cap sensitive cuz if I try to lowercase them
all, it doesn't work. This isn't a big problem though

Time and date will be stored in the device as strings. Probably
as "stngtime" and "strngdate".