pass sharepoint list item to query string and displaying it on NewForm.aspx

i have List1 and in my DispForm1.aspx I added a button that will redirect to NewForm2.aspx of List2. When NewForm2.aspx of List2 is displayed I need to autopopulate some values from DispForm1.aspx of List1.

Im thinking of storing the values of DispForm1.aspx of List1 to a query string. How can i do that? Then on load of NewForm2.aspx it will get the value of the query string any ideas?

cal_bonjovi