Custom made installer for applications plausible?

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C#

Hello all,
Thank you in advance for any advice or tips.I am in the process of making a game and I am starting to think that I will need more control over the installer. As a student I have access to VS2010 Express Editions. I have searched Google but shrouded in installer projects for VS2010 professional edition.

My thoughts were to build a separate project to handle file deployment and in that project use the FolderBrowserDialog to let the user select the target directory (obviously I will try and default to the correct location). I would have to then store the game files in the installer project. I would not know the best method for this and then how I would copy the files to the selected directory?

Can I tell CS Express to compile the actual game project to a normal executable how it would in the Debug mode so it doesn't include the 'default .NET installer project'? And if so how would I check and install dependencies on the target machine? Also I presume it is perfectly legal to use VS Express for commercial ventures?

So many questions:
Good idea?
If so, how would one lay out the projects?
How would one store files and copy them?
How would I set up the build process to exclude a lot of the default waffle?
Can I use VS Express commercially?

Thank you :) Hope I can help someone else with this matter one day