sed/Solaris case insensitive search

Hi List,
I need to modify certain file using sed. Pattern can be both upper/lower
case.
Sun Solaris sed doesn't have /I switch that GNU sed has.
Does anybody know how to perform sed insensitive search ?
--
Regards,
Ranko Mosic
Contract Senior Oracle DBA
B. Eng, Oracle 10g, 9i Certified Database Professional
Phone: 416-450-2785
email: mosicr@xxxxxxxxxx
http://ca.geocities.com/mosicr@xxxxxxxxxx/ContractSeniorOracleDBARankoMosicMain.html

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