Need help. Excel 2003.

I have a spreadsheet with data with formulas in range A1..C1000.

I want to copy cells data A10..B400 and post/copy into a new
spreadsheet. When I post it, is posting as 'values' instead formlas.
I tried all options in tools. Is there any way I can post/copy to
new speadsheet as is data with 'formulas'.

Thank you,