Hi, I have a problem when ordering the list below A-Z. If I order say in A-Z from 1-10 the order list comes out 1, 10, 2, 3 and so on. Is there an easy way round this only I can't figure it out.

PART_1
PART_2
..........
PART_10

becomes

PART_1
PART_10
PART_2
.........