You'll need to restore that to a running MSSQL server. Luckily for you, sql express should do the job. Procedure is something like:
1) Install sql express with tools
2) Open tools
3) Create a database with the name you want to use.
4) Right click, choose restore
5) Follow prompts. Make sure the check the "force restore over existing database" box.
Why does it need to be in access anyhow?