Can not Rotate Text so Set Writing Mode is from Bottom to Top

Hello all MS SQL Reporting Services developers,

I'm developing Microsoft SQL Server Reporting Services reports using SSRS Business Intelligence Development Studio (BIDS) both SSRS 2005 and SSRS 2008.
I want to write all text in a table's header columns from bottom-to-up but I could not find a solution which gives me what I want.
Reporting Services rotates text in textbox by 90 degrees where a 270 degree rotate will solve by problem.

There are some solutions by converting the text into image and displaying as an image.
But since I want to serve the report as an EXCEL report, and since the report user might not like an image I'm stucked covering this request.
I have played with Direction and WritingMode properties of textbox in SQL Reporting Services 2008 and played with text direction and writing mode properties in format tab of textbox properties window; LTR and RTL, lr-tb and tb-rl


I have tried to find a solution as a work around by typing the column headers in reverse order like "REDAEH" instead of "HEADER" and using one true type upside-down fonts like Upside Down JJ or Blufunken.
But I'm not sure how this will result actually. I'm working on it.


Here is the current situation, a confusing problem because SSRS is not capable of rotating the text 270 degrees.


Here is the view I want to have. I have marked the bottom-to-up text writing mode with red borders.



Rotate Text Solution
Here is an update for the solution of Rotate Text in SQL Server Reporting Services reports with previous SSRS version than SQL Server 2008 R2, please refer to Jason Thomas blog for creating images on the fly as table column headers instead of rotating text.
Thanks Jason for his solution, very helpful for whom working with SQL Server Reporting Services versions before SQL2008 R2