creating a popup blog and archive same

[Lit'l Bits]

I hope this is not too simplistic for this forum. I am a newbie here. I would like to create a weekly blog on my site which would open much like a pop-up window in the main screen. (I don't want to use frames.) I would also like to create an archive of these blogs so that visitors can go back and read past blogs.
Is that possible? I would really appreciate any help you can give me here. :confused:
Thank you for any help you can give.