I am doing some work in Powershell and am creating some scripts to
output some data and would like them to end up as Excel files. I am
looking for either online or book references that will help me
understand how to do this.

I have the basics down as to creating a file and getting my data into
it, I am now looking to brighten it up some and put borders around
cells, autofit columns, merge cells together to allow text to flow
across them, etc.

Thanks.

Tim