A relative of mine was kind of enough to tell me (being a young earth creationist and all) that he believed in microevolution - that a person's hair colour can change or people get taller over time but that he doesn't believe in macroevolution - that an ape evolved into a human (ignore, for now, that anyone who claims apes evolved into humans doesn't understand what science really says).
Heck, I don't even believe in microevolution - because acceptance of an identifiable and justifiable set of facts is not a belief. I accept the FACT of evolution and we have strong reasons and ample evidence to support the acceptance of the THEORY of natural selection. Whether or not I accept it, however, does not change its status as a fact.
With that said, the argument over microevolution versus macroevolution is settled. Macroevolution occurs via similar processes as microevolution but over a longer period of time. Science has come to the determination that the earth is more (so much more) than 10,000 years old so what microevolution has done in 10,000 years becomes what macroevolution does in millions of years.
Sadly, humans have evolved to understand simple concepts, relationships, shapes and models - there was (is) no evolutionary benefit to be able to understand things outside of what humans typical encounter - in time or size. It takes a willingness to accept new ideas, follow the logic and understand the processes to realize and/or accept that some things are difficult to comprehend. However, not being able to comprehend something does not make it false/wrong.
Two points: The next time someone asks you if you "believe" in macroevolution, explain to them that it doesn't qualify as a belief. And, secondly, if someone asks you if you believe in macroevolution, be prepared to debate with a young earth creationist.