Rotating text by 90 degrees without basepoint???

Does anyone know of a Lisp or function that can rotate text without a basepoint? I have text perpendicular to a designed road and I want to add (or minus) 90 degrees to make it parallel.

I need something that can basically add 90 to the all selected texts "rotation" property.

My problem in visual format below. The blue is desired.

in standard AutoCAD I would use the properties palette. Is taht an option here?

No, when i select all the text the value in the properties palette turn to "varies". Is there a way to put "varies"-90 degrees?

Was each piece of text put in with the text centered on the point it represents? If so, I'm pretty sure I've come across a lisp routine that could rotate each in turn. Just can't recall at the moment where that was.

The TORIENT command in the Express Tools can rotate the text by specific angles

@ migs- I tried your suggestion but it orientates all selected text in the same direction. This doesnt appear to be any different than typing a value in the properties palette, unless i'm doing something wrong :S

@ ReMark- The text is not centrered on the point it represents but if you could find this LISP I could still give it a go.

CSTAM

is it possible you could use Lee Macs LISP, could do what your looking for if i have picked you up properly

http://www.cadtutor.net/forum/showthread.php?42284-Some-of-My-Recent-Projects....

There was also a thread (again written by Lee Mac) to flip multiple texts by 180°. Perhaps you could alter it to flip your text by 90°

THAT'S BRILLIANT!! Thanks for your Help! The TXALIGN is exactly what I want, even better actually!