I need to pass a parameter to a SQL7 DTS package at execution time .. is this possible in Version7?

I spent a lot of time going down 1 route as advised on the net only to find that all the info related to SQL2000 .. and from subsequent research i am told its not possible to pass a parameter to a SQL7 DTS package as below >>

declare @cmd varchar(255)
declare @global1 varchar(2)
select @global1 = 'PR'
select @cmd = 'dtsrun /S tisgsqlvs002 /U sa /N PDRTest /E '
select @cmd = @cmd + '/A Client:8="' + @global1 + '" '
exec master..xp_cmdshell @cmd

Any other method available on how to do this action?

Any help is most appreciated .. thanks folks!!

Cheers,

Paul.