Sort personas per name

[Razique]

Hi all
My users are coming to me because there is something they hate :
They all have like 15 personas (it's a multi-countries customer service) and they ain't sorted by name.

When I add a new persona it goes on the botom of the list, when they click 'new mail' they see the last added signature at the bottom but when they refresh their browers all the personas are listed but no order. I tried to add a numer in front of the personas but it doesn't work.
We have like :
4 - persona 4
10 - persona 10
5 - persona 5

How could I sort this persona list ?
best regards,
Razique