"The path of the file is passed through a FileOpenDialiog in vb.net" ?

May be I don't exactly understand what you will acomplish but:

If it is a portable solution I save the parameters which will change from instance to instance

in separate textfiles which are loaded by vb.net. Eg you can save the path/name of the

Excelfile in a text file and open it by VB.net save it in a string etc. This approach has saved me

a lot of extra job.