I take it from the fact you want player faces taht you have filled your new team with real players, not made up ones?
Anyway, I recently did this myself and found some very useful guides over at fmglive for loading logo's, kits etc. though i haven't tried faces myself
THere is also a program you can get from fmbritain that automatically creates the new config files you need. I highly recommend this as it helped me out heaps. I'm at work now so can't remember exact name but will check tonight and respond (if someone doesn't beat me to it).
You'll also need to make sure you write down the team and player unique ID's cos you'll need these to create the new files. After that its a pretty simple process of saving your logos/kits with the unique id as their filename and then putting them in relevant place in program files (under fm2007/data/graphics/logos/club/team etc). As i said get the guides and you should be right. I'm crap with this sort of thing but managed to make it work.
Good luck and i'm happy to help further though there will no doubt be others along soon who know way more than i do.
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