Cannot create a simple report

[Jonathan]

I need a version of the Activity By Account report, that reports for only one
selected Account at a time, that shows the Activity's Comments. I can add
the Comments column, but the filter does not show the fields necessary to
filter by the Accounts name.

I also need a high-level report for one selected Account that shows the
Details, and the Activity History. I can't find a way to make that happen
either.

Any thoughts?

Thank you.