You should be able to convert your MR and/or your starwood points to Delta. Starwood will give you 25000 miles for 20k SPG points.

That being said, you might have a better value possibility watching the Mileage Run thread for a cheap fare into Europe, though. Also, given your flexibility, play around with http://www.farecompare.com/search/flyertalk.html, inputting ROC, SYR, and BUF as your origin and Europe as destination.
Finally, consider buying a revenue ticket to JFK or BOS on Jetblue to start off, you'll likely get much better award availability out of those cities.