First of all, you're not the Brian Sikorski who's a pitcher for the Texas Ranger's are you?
Now from what I can decipher, the Sikorski spelling is of Polish decent and the Sikorsky(i) spelling is of Ukrainian decent. But who knows with all the inter marriages that have no doubt taken placve over the last 2000 years!
I have a message posted if you'd care to check it out. Who knows, maybe we're related. I am looking for my relatives.