SDIO MULTI BLOCK

I am trying to write a device driver for a device that uses multi
blocks.
I had found this in the news group:

 Hello Esha,

>
> I too have attempted to use SDIO block mode with Windows XP SP2 and I
> too reached the same conclusion. The SDBus driver appears to be broken
> with respect to
> block mode. In particular I could find no way to specify a number of
> blocks. All attempts to do so resulted in the block count being used as
> the length field in XP.
>
> I have captured this sequence on a scope so I am pretty convinced that
> this is the case.
> When using "EXTENDED" mode the resultant waveforms were exactly as if
> the host was sending a CMD52 operation except that the command code was
> 53 rather than 52.
>
> In the end I simply had to reach the conclusion that Windows XP just
> does not support SDIO block mode. However I should point out that I
> have not received any official confirmation of this from Microsoft.
>
> Best Regards,
> David

Anyone know is it TRUE?
If no how do I tell the bus driver the size of blocks I am going to use?