If you have a domain name, you can even make your domain names match. In Blogger, there are instructions for getting your custom domain here: http://help.blogger.com/bin/answer.py?answer=55373&topic=12451 It includes setup instructions for a lot of common hosts, like GoDaddy. The advantage of doing this is that your blog address is now http://blog.yourname.com instead of http://yourname.blogspot.com.
After that, all you have to do is get your menu links from your website pointing the right places and then format your blog so that your menu bar matches your webpage menu bar. In Blogger you can customize the heck out of your template, so have fun and experiment. Sometimes it takes a few tries, but if you’ve already designed your website, the hard part is over.