Make VS 2005 vs Make VS 2008

[teognost]

As I seen your answer on this post:
http://www.kinook.com/Forum/showthre...t=make+VS+2008

for me it is not clear why exist 3 actions Make VS.NET / Make VS 2005 / Make VS 2008 if they are actually the same ?
And having a VBP project -how can I tell if an action is Make VS 2005, Make VS.NET or Make VS 2008(as when checking the properties I did not notice any difference)?

We have a build box with VS2005 installed and we used Make VS 2005 action (or Make VS.NET ,I am not sure)
From now we plan to migrate the trunk builds to VS 2008 but branch builds will remain to VS 2005 (so both VS 2005 and 2008 will be installed on build box)
I guess I should put some switches to use a Make VS 2008 action for trunk and Make VS 2005 action for branches (I will use the same VBP project for trunk and branch builds)
Or should I use a Make VS.NET action as it will detect automatically whether is VS2005 \2008 solution and I do not need any switches?