For over a year I have struggled with Excel opening all my spreadsheets on the same window. I know you can use View to split/arrange/move the open spreadsheets around but sometimes I just prefer to have 2 separated independent windows like what happens with Word files...I looked into multiple solutions, some even suggesting register changes but I found the answer in a MS forum here and it is so simple I have clipped the answer that solved my problem below (Thanks Bananarama_1 whoever you are!) so you don't need to look for the right answer in the forum.
Just open another Excel instance by simply clickink the Excel icon on the task bar with the mouse wheel and voila, you have an independent Excel instance you can use to open another file!
