since Pim-x wont let me edit plop cost or pretty much anything and you don't have all the availabilities in just PIM... is there just a properties editor i can download so i can set variables to custom buildings and use PIM-x because PIM-x has more abilities... but doesn't allow variables to be edited... I would like to create something in PIM-x then use a properties editor to change cost, desirability, etc.
General properties editor? iLive's Reader, of course!
As cogeo said, ilive's Reader (http://sc4devotion.com/csxlex/lex_filedesc.php?lotGET=656). But you could also try SC4Tool (http://kurier.simcityplaza.de/details.php?file=315).
With the former you can do anything, but its learning curve is quite steep.
The latter is probably more suitable for the tasks you've got in mind. ;)
SC4Tool is not really a "general properties editor", but as RippleJet said, the Exemplar Editor in SC4Tool should do the trick for you. :)