SITE DISAPPEARED-

i am following atomic blogging and went to update my codes in “VARIABLE PHP” it was a simple task of changing codes of click bank and adsense and bloglog. when i “updated file” and went to view my site it was all gone..empty page
ive tried to undo the codes i entered and remove and replace exactly what was there and still no site… under any catorgy “view”
anybody HELP PLEASE
CLAIRE