When you start looking for a nursing program, you should note that not there is no difference between the two programs, only in the title. Some cities use LVN while others may use LPN.
In the LVN program in Denver you will learn much of the basic nursing skills that will allow you to obtain your license and begin working with patients after graduation. You will learn anatomy, physiology and other basic sciences. You will learn pharmacological math as well as other courses related to communication and comprehension. You will also learn many clinical, nursing specific skills, first only as classroom instruction and then later in a clinical setting where you will perform these skills on real patients under the watchful eyes of an instructor.
Because the two programs are the same, you should have no problem transferring your credits from the LPN program in Denver to the LVN program in Denver or vice versa. Of course, the basic admissions requirements for each school are different so always check with the admissions counselor to see if you need to take additional basic ( non-nursing) classes as well.