how to open Mafia's cabs with i6comp?

[name]

Hi, I just cant open the data1.cab from Mafia with i6comp.

Ive done this,
at first i have copied all files from the Mafia cd3, where the data1.cab and data1.hdr to a folder called Mafia, then i have copied data1.cab and data1.hdr to the C:\Windows\ where i6comp.exe and its .dll is. and ive copied the backup.exe to windows. now i am opening i6comp and give the command:
i6comp l data1.cab *.*

what is the program saying? normally it shows all the files the cab contains but no, it says:

no files matched the criterica, duh!

but why? what am i doing false???

please help
name