Page Width & Timestamp Location

Hello,

I am trying to figure out how make the posts on the main page of my blog look the same as they do on the permalink (in terms of width of the post, location of timestamp, etc.) Currently, on the main page, the timestamp is to the left of the post and the text is narrow; I want it to look the same as it does on the permalink itself (timestamp to the top of the post, wider text width, etc.) Can anyone tell me what code I need to edit, and where?

Here’s a sample permalink: http://fpwatch.com/?p=1640
Here’s the link to the homepage: http://fpwatch.com

Thanks much.