whats "awstats"?
well. I don't use the robots.txt, and I would not worry about the spiders crawling your forums...let them so the forums can be found in google
lets see if I can post you an example of meta tags:
<meta name="title" content="Put a second title here">
<meta name="description" content="Nice website with forum, stuff, cars">
<meta name="keywords" content="forum, stuff, cars">
<meta http-equiv="Content-Language" content="en">
<meta name="language" content="en">
<meta name="robots" content="INDEX,FOLLOW">
<meta name="author" content="TheMajor">
<meta name="copyright" content="TheMajorWebdesign">
<meta name="revisit-after" content="5 days">
place it between the <head> and </head> in yer website