umm... We have had that problem sometimes. It is probably due to faulty internet connection. Just click reload/refresh, it oten reloads right away.
Check that you have a working internet connection, just b/c your other computers do doesn't mean that this one does. Faulty ethernet cable, plug, router, modem, wireless... etc.
I also noticed that iTunes doesn't open but when I go to task manager under processes it says it is running.
Does anyone know what might be causing all of this?
To fix the iTunes, under the processes tab of the task manager, end the process, then pull it back up, that might work.
What operating system are you running and what version(s) of Firefox, Internet Explorer, iTunes etc. are you running? Newer versions sometimes have problems on older systems.
VISTA
If you have Windows Vista:
All Hope Despair Ye Who Enter Here
A lot of programs don't work with Windows Vista, they just aren't compatible. Go to the control panel and turn off parentol controls, then restart the computer, right-click the installation executable and click Run As Administrator. That works for quite a few installers that wouldn't otherwise work. Also try changing compatibility settings.
Other options? Get on mIRC (or IRC on dplogin.com) and find someone that could help you and do a real-time chat to try to identify and fix the problem. Or, contact a real IT technician.