excel2003 hide column. or .... please help

I have excel 2003

I have my price list, and now this year I am going up 8% (or *1.08)

well i did the =sum(cell*1.08)
and filled down
looks great
now i want my customers to be able to download or get it emailed to them.
yet i do not want them to see the old prices, nor do i want them to see the formulathat i used.
just the part number, description and the current price

i have over 2000 items so retyping each cell is kinda time consuming and really makes it easy to make a mistake.

can any one help me?

thanks in advance!