Need help on partition create script

[portal]

I have an Index which has 70 mil rows in DSS. I was assigned to create a global partitions on the column (part_name)
by range can somebody help with the query about how to create partitions.
1. My Index is "CREATE INDEX IND_POR_DT_UTI ON
PORT_VISION(PART_NAME, UTI);"
2. And the data type of Varchar2(50) with 60 distinct values
and data of part_name is like this"ISETSTMT,LOADER55,LINER55,PGMSTZVE43,KMULTSTRT21...)
3. Oracle 9i
Thanks & I appreciate your help