Can't find server.
I am connected to the internet and can access other programs but Safari says it can not find the server. I am working from an iMac with os x 10.8. I am a new Mac user(since Jan) but this is the first time I have had this happen. I need Safari to access a scheduling program for my office so any assistance would be greatly appreciated. Again please remember I am VERY Green when it comes to Mac's. Thank you in advance.
iMac, OS X Mountain Lion (10.8.5)