I need a little info regarding Pro Tools upgrades

[J. Guerrero]

Last year my Mbox included only the Mac version of Pro Tools. Later I bought PT 6 for OS X a couple weeks after it was released and I'm entitled to download the 6.1 update for OS X, but now I need to run my Mbox on a PC and I would like to run PT 6.1, not the 5.3 version available for download.
I wanna know if my Pro Tools 6 license for MacOS 10.2 can get me the 6.1 version for Windows XP for free. Or is there a special price, or do I have to pay full price. Just wanna know what the upgrade path would be.
Thanks!

[Michael Cottrell]

Crossgrade... Not upgrade.

[J. Guerrero]

Sorry... my bad
But really, is there a crossgrade path for this situation? I don´t have any problem paying full price, but I don't want to find out later that there is some sort of special price or that it´s actually free.
In two days I won´t have a Mac at home until next year, and I will have to use the Windows machine for a while...