Help - Deleting rows from data tables via a check box
 

I am fairly new to VBA programming so sorry if I say anything silly.
I have a report which I want to filter essentially based upon the
output from a user form with check boxes. The data sheet I has
basically has rows of data with the first column having an identifier
- letter from A to Z. Basically, what I am trying to achieve is to
allow the user to select which letters (usually mutliple) they wish to
select and then delete all the other rows they dont want to keep

i.e. user select letters E, H, L and Y - once the macro is complete,
only these rows with this value in column 1 remains.

I am completely stumped with how to do this removal of data! Can
anyone help please!