As a parent of a player being recruited by virtually all of the schools listed by Pedropere as well as academic D1's, we have found the process between academic D1 and high D3 to be fairly similar. For Claudette this means things are getting late and the schools are doing there final looks and overnight visits right now!
There is a wide variety in D3. Emory has 5,000 undergrads and is a fun place but has no football team- Williams 1500 kids is also fun - great tradition but very small. Swarthmore is quirky - U of Chicago - "The place were fun goes to die." Amherst - preppy. The only way to appreciate these schools is to visit. One word or paragraph won't begin to describe the variety. Swarthmore, Tufts, Hopkins - These names are a big deal in the real world.
Here is the good news. A 6.61 sixty is highly valued in D3. 1800 won't get you in to any of these schools without baseball. But, if you play smart, that sixty time might do the trick. We look at it this way. There are three aspects to a ballplayers college life: Academics, Social, Athletics. In D1 you can only have two of those. In D3 you might get to have all three and you certainly can have a very fulfilling academic experience that would not have been available to you had you not been a really good baseball player.
The recruiting process is not that much different than D1 with the exception of money. At high end D3 the currency the coach has is admissions.