My goodness - why would you even consider using Photoshop????
Assuming the contents you want to transfer from the PDF to Excel is data in columns and rows (otherwise, why would you be going to Excel?) then...
In the Reader, you have the 'Column Select Tool'. Use this to select columns of data, then copy and switch to Excel and paste into a cell at the top of the column. You cannot do any more than one page at a time (gets too messy) and if you try and select more than one column of the PDF at a time, it gets put into the one column in Excel.
There was another thread which discussed this some time back and I will try and find it.