States where Republicans picked up legislature seats in 2006

[Small Business Owner of Any Repute]

They definitely gained in Montana, because the Montana House switched from D to R control.  This list should be fairly easy to locate.

[Small Business Owner of Any Repute]

The following are Republican gains, as defined by net change from Nov 2004 to Nov 2006.

AL Sen.  GOP +2
GA House GOP +3
ME Sen. GOP +1
MT House GOP +0* (Control D -> R)
MT Sen. GOP +1
OK Sen. GOP +2 (Control D -> Joint)
TX Sen. GOP +1

In the previously 50R-50D MT House, Democrats lost a seat to a Constitution Party candidate.  While Republicans did not gain seats in the MT House, they did gain control of the legislative body.  (In the MT House, the Governor (D) breaks ties in leadership.)

What about Alabama, Louisiana, and West Virginia?

See above for Alabama, Louisiana does not have State Legislative races in even-numbered years, and Democrats gained seats in West Virginia.

[Small Business Owner of Any Repute]

Yeah, but it appears to be an offlier and that republican had the coattails of a popular liberal republican running for office.

Lord.  A GOP gain of a single seat in the Maine Senate had everything to do with local issues and nothing to do with Olympia Snowe.

Democrats made significant gains in the Maine State House last year.