Custom webpart with Posts and comments programmatically

Hi,

I need to have the custom wepart with all the blogs title and the comments in a web part,

I bought the posts and its displayed well but now i want to have the commentsas it is like in default page with post and comments.

I found that we can add the XSLTListViewWebPart

but am not sure how to do this programmatically!

please help m its very urgent

Thanks