Only if you have 64-bit Windows. Way to know what you're doing.
Ok, fine. He has to find out from the OP whether he uses XP, Vista, or 7.
It's safer to assume 64-bit W7 by this point in time.
If it's Vista, it's most likely installed in a different place, as Badspot recommends "C:/Blockland"
If it's 64-bit W7, then it's what I said.
If it's 32-bit W7 (rare), then it's what Pacnet said
If it's XP, then Pacnet's right.