I have Office 2003. I tried copying data, 20 Rows X 6 Columns, from one EXCEL file to paste into another Excel file. When I go to paste the data in the second file "Paste" is grayed out.

I have also saved the first file where I need the data from as a .txt Tab Delimited file but even then when I try to copy from the .txt file and paste into the second file "Paste" is grayed out.

I tried Copying and Pasting just one cell only of the first .xls file but "Paste" is still grayed out.

Is this an Excel problem or a clipboard (Windows) problem?