To replace the current home and away jerseys.
Rename Wiz.2012_uh002.iff to uh002.iff
Rename Wiz.2012_ua002.iff to ua002.iff
or
Rename Wiz.2012_V2.1_uh002.iff to uh002.iff
Rename Wiz.2012_V2.1_ua002.iff to ua002.iff
Rename them to r1a002 [away] & r1h002 [home] if you want to replace the retros. But you'll have round collars with the retros.
You might also want to replace the secondary away [ux002] & the 2nd retro [r2h002]in order to have V collars.