You will not need to buy a compter if your have a computer that will run the required software for your courser. If you do need to purchase a new computer, a suggested configuration is listed below:
Pentium III Processor
128 MB RAM
500 MHZ
56K Modem
40 GB Hard Drive
Speakers
Sound Card
Note:
If you plan to use the computers made available by your employer, you will need to check to see if your company has a firewall which might prevent downloading or accessing chat rooms that would be required for your online courses