Is it possible to substitute sea salt for regular table salt in recipes? I can grind hte sea salt up more if I have to.

i really dunno about the substituting, but you can buy fine sea salt

It should work. But unless the salt is the featured taste, why use sea saltwhen the cheap stuff will do the same thing?

I don't see why not. Careful though: in my experience, kosher salt is saltier than table salt, and table salt is saltier than sea salt. YMMV.