How do I run the old xlm macro?

I have an old xlm macro which is auto open. I doulbe-click on the
..xlm file and the macro runs. It works fine.

How do I run the macro while the file is still open? I vaguely
remember in the old Excel there was a Run command in the
tools/macros. But the new Excel (2003, sp2) doesn't have such an
option. Thanks.