The Scot scored the only goal of the game in the 39th minute to move Billy Davies' team above Bolton.
"The lads worked hard and it was a massive team effort."
Miller was part of the Scottish team who scored a 1-0 win over France in their Euro 2008 qualifying match in Paris last week.
And the striker continued: "It was a massive result in France - and it was very similar to tonight.
"We had to defend well and nick a goal - the lads at the back were fantastic tonight."
Team-mate Stephen Pearson added: "It was a great strike by Kenny - getting that goal was a big help for us.
"We defended well, it was a good team effort and I think we were worth it. Hopefully we can kick on from here."