I have a couple of suggestions to improve the tool even further.
I'd greatly appreciate, if you could consider adding the functionality to 1) create a custom header, 2) create a custom file name, 3) re-arrange the order of built in text, 4) create multiple instances of the Excel Export Tool or/and write to different tabs.
ad 1: A custom header row would allow to immediately sort/filter results by respective column header when opening the file in Excel (right now, I add this manually after the facts).
ad 2: A custom file name would also come in handy for many reasons. One could for example use StreamWrite to create the file and push the header even before the TradeLogger started its work to push values :-).
ad 3) Right now, the info in cell A1 houses a date and as such is not static. If re-shuffling of built-in text was possible, one could put a static value e.g. your "Info" in A1. That's easier to import via LinqtoExcel using "no header" import.
Ad 4) Endless possibilities ...
I'd like to close with recommending this tool to everybody interested in heavy logging for further analysis. I love it and would love it even more if the above was also made possible.