I think I know your problem.

Make sure your domain account is the same domain with the SQL  

Server that you try to run the job. If they're not (for example 

Prod.com vs...

Definitely, a Virtual SQL Name & IP Address are the requirements before you can run the SQL Cluster installation. The best source for this type of installation is below:

http://search.support.microsoft.com/search/default.aspx?Catalog=LCID%3D1033%26CDID%3DEN-US-KB%26PRODLISTSRC%3DON&withinResults=&QuerySource=gsfxAdvancedSearch_Query&Product=sql2k&Queryc=Clustered+Installation&Query=Clustered+Installation&KeywordType=ALL&maxRe

Best...