General answers: yes, this can be done, and it has been done … but mostly for GPs, which have a lot of staff to help with managing the logistics of this. For previous GPs, we had players declare when they registered, which language they want; they are then enrolled in one of two different tournament files, in the software. Once players are seated (separate sections per language), the two files are combined into one event, before round one. The deck reg, swap, verification and build are all conducted within the two language sections, while the actual play is combined, regardless of language.
Specific answer, for Martin: please contact me directly, ASAP:
scott_j_marshall_jr@yahoo.com (pretty sure you know that already - heh!)
d:^D