.NET Installer Issue

Hi Gurus,

I would like to know something very important on .Net Windows Installer. I have created a web application with following folder hierarchy:
Project\Presentaion\
Project\Business\
Project\DataTransferObjects\
Now I have created a windows setup thru VS.Net with Presentation as a part of Web Folders. And given the required properties.
When I intall my application on my clients machine it asks for the name of the virtual directory and Intalls the application in the dfefault web folder.

My problem is that, now the client wants that he should be able to select the web as he is having more than one web on his machine. He want to create virtual directory by himself. He wants the installer to prompt the user for location where the files should be copied and installed? Please help me as the client is pressing hard!!!

Thanx in advance.
Sri