If you are looking for ways to access your office PC or home PC remotely to perform some basic functionwith having to pay any fee, you should look at www.logmein.com where the free version allow you to login your computer remotely and perform function just like you are sitting in front of that PC.
Sign up and installation is easy and I have tried to connect to the host PC and found that the connection is as such that it is almost as good as you are sitting in front of the host PC. It is simply an excellent service.
The Pro version which is a paid version allow you to synchonize file, transfer and backup file securely, allow others to access your PC temporary and more. The service cost USD 69.95 per year.