"We're not going there just for the occasion. We're playing Barnsley - both teams are in the Championship, both teams have got an equal chance of winning the game.
"We've got to make sure that we do our utmost, that we're at our best and play our own game."
Jimmy Floyd Hasselbaink seems set to lead the Cardiff attack on his return from a three-match suspension.
But there is some doubt as to who manager Dave Jones will select to be the Dutchman's strike partner.
Steve Thompson and Paul Parry both suffered hamstring injuries in Tuesday night's league draw with West Brom.
Wales international Parry would be the preferred option but is rated at only 50-50 to recover in time and will have a late fitness test on Sunday morning.
Scotland striker Thompson seems set to overcome his injury problem though, although Jones could opt to pair Trevor Sinclair - a regular frontman during his time at Queens Park Rangers - with fellow veteran Hasselbaink.
Barnsley have their own injury problems and are without Stephen Foster and Wales cap Daniel Nardiello, while Jon Macken is cup-tied.
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