Dynamic Column Titles In Tabular Report?

Is there a way to dynamically feed the Text of the Column titles into a report at run-time in Reporting Services?

In Access I could use DLookup to pull YTD Dates (e.g. "05/2008") from another view that kept track of the settings for the year being processed (Curr Year, Prior Year, Prior Year II, YTD I, YTD II, and etc. for each Year's data. YTD I and YTD II would read like '07/2008' and '09/2008'. The YTD II value could change as the next month's data became available ('10/2008'). As we switched from year to year (2007, 2008, etc.) all I had to do was update the [tbl Status Flags] table for the next year and all my many reports would reflect the correct headers for the periods in the data. The period could be switched back to prior years at any time by the user in order to view past data. When the year was changed the report headers would have to reflect that. The status flags table would give the setting for each year. Using hard coded titles was too confusing for the user and changing the titles manually was not feasible.

We have moved to SQL Server 2005 and Reporting Services 2005. Besides losing the ability to Change the Data at the top of every page as the Dept, VP Name, Director and etc. changed I also seem to have lost this dynamic column headers ability. I have found a cumbersome workaround for the data at the top of the page, but the only thing I have come up for the columns is to try to create queried parameters to feed those titles (they will be the same throught the report) and to fill those parameters with the queried defaults. I haven't tried it successfully yet, but so far it's looking like that is not how the defaults work.

Hopefully someone out there has a solution. I'd appreciate any help I can get.