How to export to Excel--from user selection

[AFK1]

I am trying to export data from my vb form to Excel file. But I am trying to do it different. I am showing a form to user, in which I ask them which fileds they want on the excel shheet(that will be check boxes) , where they can choose as many fields as they want. Then they need to select a date range. Based on that date range and the check boxes that they select I need to load sheet. I know how to load sheet from Grid, using the bookmark, but I have no clue of how would I do that. Any help please....Thanks