Question about searches

Hi, I have a question I'd direct to the Webmaster forum but I see "new message posting disabled"? (if I'm looking in the wrong place please let me know).

I'm wondering how to do a search specifically within an ID name, regardless of forum. Sometimes I recall a post and want to review it again - I remember who wrote it but can't remember which forum I saw it in, since many posters use various forums and sometimes talk about issues outside of the main topic.

Or... there are several posters I respect highly and would simply like to look up what their thoughts are about various keywords.

I hope I'm explaining this properly. Flower