VBA that hides columns based on dates to and from in selected cells

The spreadsheet attached Shows a start date and end date

Along the right hand side you have WEEK COMMENCING DATES in each week number

If i put 31/03/2012 in start date and 07/04/2012 in the end date cells, i would like to hide the rest of the weeks and just have weeks 1 and 2?

This will then need to work for the rest of the sheet, i.e. If i put 07/04/2012 to 28/04/2012 i would expect only to see weeks 2 to 5.

Not the best at VBA and was wondering whether anyone can help me with this!!

Cheers

Sheet attached!