Those are pretty big and should probably blow out easily using something like the Giottos Rocket Blower.
However, sooner or later you will have to do a more 'serious' cleaning of your sensor. So I would suggest you start researching now the various methods and the tools needed to accomplish the task.
Personally, I use the Visible Dust brushes and they work like a charm.
Remember also, that in most cases, the 'dust spots' that one sees on digital images are very very small, most are invisible to the naked eye.