Hi Melanie
1. You can keep your current registration on any computer you want and MAP the drive, the registration is on and you can then view it locally on the local computers on you site.
If you go off site then you can come in via REMOTE DESKTOP CONNECTION you are able to access your files or programs.
2. You can also do the same with AC and access it vis REMOTE DESKTOP CONNECTION at any site you are on but you will need WINDOWS XP PROFESSIONAL to have remote access or any software that allows you remote access.
2. AC charges per PROVIDER so you can access it from as many sites or office you want and you do not need to install AC if you come in REMOTELY.
3. So you can run both systems currently if you want- OLD registration system on a particular folder and MAP that drive so it is accesible on the network and also use AC and view it on the NETWORK locally ,but you will have to install AC on each local computer or if you are out side the office, then come in REMOTELY
I hope this helps
GRENVILLE