iptables : no more TOS but DSCP ?

Hello,

I've upgraded my kernel to 2.6.25, and my iptable TOS mangling does not
work any more.

I've read that it was replaced by the DSCP table. The help says :
DSCP target options
--set-dscp value Set DSCP field in packet header to value
This value can be in decimal (ex: 32)
or in hex (ex: 0x20)

--set-dscp-class class Set the DSCP field in packet header to the
value represented by the DiffServ class value.
This class may be EF,BE or any of the CSxx
or AFxx classes.
These two options are mutually exclusive !


but, is there any way to convert the value of Minimize-delay (TOS) and
Maximize-Throughput (TOS) to DSCP value ?

Thanks