Wrong section, but I'll try to answer anyway. For future reference it should be
here.
Have you put them both in the modules folder on your hard drive (in the M&B folder)? If yes then when you run M&B then they should be displayed in a drop down list. This list can be seen by clicking where it says Module: Native. Just select the mod you wish to play from the list and then play as usual
. Hope this helps.
And welcome to Exilian
.