Need Help Please, Skype error 0xC0000005: Access violation. What to do?

My laptop before was infected by “System Check Malware Virus” but I managed to clean it and repair its effects manually since my Skype has gone down. But the thing is, when I try to use Skype again I got to meet these irritating errors again: “(debugged using Microsoft Visual Studio 2008): Unhandled exception at 0x005e4f47 in Skype.exe: 0xC0000005: Access violation reading location 0x000017e8”. I assumed that it will work back normally because I have reinstalled it already but still same thing has occurred. How do I get to repair it? I have used the newest version of Microsoft Security Essentials, Windows SP3 32-bit and Skype 5.8. Can you see any mistake with the programs I’m using? Can this possibly still be fixed?
