random access and hotspots

[TuX RaceR]

Hello List,

I'll be accessing a table mainly in random access and I am looking for 
an efficient way of randomizing the keys.
I thought about a MD5 hash of the ID of the record, but as MD5 returns a 
string of chars [0-9A-F] I was wondering if there was a better method to 
use.

Thanks
TuX