maybe will this help:
Click on START, then RUN, then copy and paste this command:
regsvr32 softpub.dll wintrust.dll initpki.dll dssenh.dll rsaenh.dll gpkcsp.dll sccbase.dll slbcsp.dll cryptdlg.dll
(this is one command. its all in one)
Click OK, open up MSN and it *should* work.