There is another tool that will do what you want quite easily.
Select the lines you want to move.
On the Edit toolbar, select the tool on the end (it really doesn't have a name - but I think it is Align to Line, not the Align and/or Evenly Distribute tool that you have been using).
Select the other line that you want to align with.
The Align to Line dbx will open.
Under Alignment check Centers. OK.
Glenn, I was referring to objects as opposed to lines. Like polylines, and or text blocks, etc.
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Kind Regards,
Dave Pitman Current Version: X5 System Win-7 64 bit
Intel i7 930 (2.8 ghz x 4)
Nvidia gtx 260 (1 gb ram)
12 gb ddr3 ram