See this Sheldon Brown page;
http://www.sheldonbrown.com/bbtaper.html
You need to know the taper of your cranks to match the right length bottom bracket axle to get your chainline correct.
What cranks and hubs do you have?
@andyp started
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See this Sheldon Brown page;
http://www.sheldonbrown.com/bbtaper.html
You need to know the taper of your cranks to match the right length bottom bracket axle to get your chainline correct.
What cranks and hubs do you have?