But you should pay attention to the alignment if one uses older Windows versions. Incorrect alignment leads to a double write rate. This in turn leads to a more rapid aging of the SSD. In addition, you brake the SSD characterized.
As you get on Windows 7 or Linux installed the SSD partitioned properly and you need not pay attention to the alignment.
Windows XP and 2000, it can not in any case. In Vista I'm not sure.
This one, however, can find everything with Google out.