Plz Help me in 301 Redirect

Hello all,

I had a blog hosted on blogger.com with my own dot Com domain. Now I have moved that domain to wordpress with my own hosting at hostgator.

Now the problem is the my old html pages are giving 404 error because I am using custom /%category%/%postname%/ permalink on my blog.

Please help me how can I setup a 301 Redirect, so all the old html pages are linked to my new permalink structure.

Thank You