It will depend on where you are able to get employment and what your duties are while at the help desk. I would suggest that you look into getting your A+, this will help you in getting that position. Now, once there, complete the tasks that you are assigned as a tech on the help desk, and try to complete anything that may deal with networking. This should put a spotlight on you showing that you have experience in the networking field. After getting your feet wet, say about a year or so, see if there are any positions open in your company. If not, start looking for a networking position with another company. Also, reme,ber not to burn your bridges. The IT field is a small world, especially if you stay in the same area.