"Securityupdate.com" virus on homepage - Need Help Removing

everything seems to be running ok now, but i did notice i still have to reset my homepage often. My choice for homepage will not stay active and will defauld to msn.com the majority of the time.



the securityupdate.com page is not showing up on IE startup anymore, but google will not stay as my homepage in my options.

 

Does it change at any particular time or just randomly?

Lets look a little closer.

Open HJT, click the [None of the above, just start the program] button.
Then click the [Config] button in the lower right hand of the program.
Then select the [Misc Tools] button.
In the upper left hand side of the program tick the two boxes [List also minor sections (full)] button and the [List empty sections (complete)] and hit the [Generate StarupList log] button, select 'Yes' when prompted by the dialog box. The resultant scan will produce a notepad log file, please paste that log file back here for me to review.