.XPS patching problem

[BCDraven]

I guess I should say I'm new here since this is my first post ...
Ok my problem is I'm trying to patch a copy of Dance Dance Revolution 2nd mix with a .xps patch...I pull open my MS-DOS properties and insert on the command prompt line C:\XPS DDR2nd.xps DDR2nd.img, apply, ok then I bring up the DOS window and the commands follow out:
opening xps file...complete
opening iso file...complete
searching for system.cnf...failed
Does anyone have any advice on how to get the file successfully patched and what method I'm going about wrong to do it? I have tried the file in .ccd, .iso. and .bin and all of them come back with the same results >_<...any suggestions?
BCDraven