How to find an MS SQL Server DBA

My ISP runs MS SQL server for me and does not have experience managing this type of database. For example, the database occassionally crashes and looses data. Our site is not live yet, but once we go live, this is unacceptable.

I need somebody to consult on the database configuration, tuning, security and maintenance plan. How would I find a person with the correct qualifications?do you need someone for occasional consulting or
you are looking for full time sql server dba ?