zomi,
Welcome to the forum.
The first step you should take is to ensure that
Swen has been erradicated from your system. You can use the
avast! Virus Cleaner found at this link:
http://www.avast.com/i_idt_171.html. Here you will find background information on removing viruses and worms, a description of the cleaner and how it works, a list of malware that the cleaner can handle (
Swen is listed), plus a link to download to the program.
The second step is to apply the critical updates for Internet Explorer to correct the
IFRAME and
MIME vulnerablities exploited by Swen, among others. While you're at it, consider using Windows Update to apply all the current critical updates, notwithstanding the warnings about problems for certain users that have. You can search this and other forums for "Windows updates" or "critical updates" for more comments on this course of action.
For your problem with
Outlook Express, see
Microsoft Knowledge Base Article - 310894 (
Error 0x800ccd01 Occurs When You Start Outlook Express) at this link:
http://support.microsoft.com/default.aspx?scid=kb;en-us;310894&Product=oexRegards,
Hornus