patching help

I´m quite confused about this and I hope someone could clear this out for me. I have the RTW and the two expansions. I also have all the patched for those versions but…………………. If u install the Alexander, then u have patched the hell out of the rest or u still have to apply the 1.3 and 1.5 if you wanna play the RTW and the 1.6 if it is the BI? If I have installed the Alexander, do I still have to install any other patch in order just to play any of them or not? thx

Simple just check in the video option i the right upper corner the number, for BI it should be 1.6 and for Rome 1.5.
If you installed Rome + 1.3 + 1.5 + BI + 1.6 + Alexander (is 1.9 if not mistaking )
then wen you check it should be ok ..
Another way to check right click on the exe file and see the Version it should be for Rome 1.5 and BI 1.6
Hope this helps .. good luck