returning an auto_increment-ed index after an insert

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I have a (perl) script which inserts new entries into a mysql table. The table is indexed using an auto_increment column, so my inserts look like

insert into sometable columns (ID, other columns....) values (null, other values....)

I need to get the IDs of the newly created columns, to use elsewhere in the script. Is there a way to do this?

Thanks
Dave! [sig][/sig]