1. I need to have a link to the parent blog holder from every blog entries. How would I do that?( without using full path $BreadCrumbs )

2. When I add the side bar "Blog archive" to the page, It appears on the page (on the my blog holder page http://mysite/my-blog/) fine.

But when I click on one of the "month" on that side bar, I get an error page (http://mysite/my-blog/2009/11)

"Website Error
Forbidden

The website server has not been able to respond to your request."
What is the problem?

thank you!

1. I need to have a link to the parent blog holder from every blog entries. How would I do that?( without using full path $BreadCrumbs )

Well since the Blog entries will be children on the blog holder you can do $Parent.Link on the BlogEntry.ss template to get a link to the parent page (blog holder)

For your 2nd issue this is probably due to this issue - http://open.silverstripe.org/ticket/4482. Try downloading the daily build of the blog module (its on the blog module page). To see what the actual error is put the site into devmode (Director::set_environment_type("dev"); in your _config.php file) you will get an actual error message instead of that generic error message

I get an error "Action '2008' isn't allowed on class BlogHolder_Controller" if I click on the year 2008.

willr, do you mean downloading Latest trunk build here: http://www.silverstripe.org/blog-module/ and replace all the files in the blog folder?

Everything works, thank you !