Test numbers are scary!

[CarlD]

Good advice.

But do not even THINK about T/A now. 200 is the absolute maximum acceptable value in a vinyl pool. Get your pH down to 7.3/7.4 and T/A should come down as well--Michael may be able to calculate that. Any T/A under 180 and over 80 don't even worry about even after everything else is stabilized.

[marciastz]

Thanks to all! I added chlorine and will continue to test to see how much more I need. I will have to get to the store to buy stabilizer and I don't think they will be open tomorrow so it will probably be Monday before I can get it. Can I go ahead and add 1 qt. of muriatic acid now to bring down the PH at the same time I'm trying to raise my Chlorine Level? By the way: My Cal. was 120-140 (I wasn't sure which shade of blue to look for?). Is that bad or good?

[waterbear]

Actually, in this thread Ben (Pooldoc) advises adjusting the pH to 7.8 so the ammonia products formed by the bacterial degreadation of the CYA will form monochloromines and hitting it with chlorine until the chlorine levels hold.
http://www.poolforum.com/pf2/showthread.php?t=1001

Might be applicable here.
Once the chlorine is holding would seem to be the time to worry about Alk and pH.