How can I convert a week number to a month?

[gendean]

Help!!
I have 2 fields in a table one for a year and one for a week number that data is being collected against.
I need to change these to a month and year for the report. Is there a way to do this??

 

[FoFa]

Try DATEADD from 1/1/2005 and extract the month?