similar task
I am using something similar but I do not close the 1st form, rather, I have the 2nd form pop up similar to a web browser pop-up.
Mine is to lookup contact information....
on my form, I have a drop down of companies - the data comes from a companydata table. From there, I have a button at the end of the drop down (I used an address book icon) that opens a companydata form with a property set to go directly to the record that matches the selection in the drop-down list.
My companydata form is a smaller pop-up type form that lists full company name, address, points of contact, tel #, and e-mail.
Hope this helps - it might be another option depending on what you are trying to achieve.