Being that Blogger (blogspot) is not actually hosting company, migration from Blogger is a little different.
Blogger has an option that will allow you to move your content over the zip file.
In addition, since version 2.2, WordPress supports import directly from your Blogger account.
Simply install WordPress, or send us a request that we install WordPress for you.
Then login in to your WordPress Admin part (domain.com / wp-admin), go to Manage → Import → Blogger and follow the instructions to successfully import your content.