you have windows xp prefessional (which i assume is not part of a domain - not conneted to a company server) and when you log on with your regular user account you are told that the accound is disabled.

to remove the disabled status of the account do the following:

start in safe mode - when you boot the machine press f8 repeatedly until you are presented with a menu with various options on how to start to computer, select 'safe mode' and then log on as 'administrator' with no password (unless you set one).

once in windows, click 'start', then 'run', then type in 'control userpasswords2' and it enter or click 'ok'.  a window titled 'user accounts' should open.  select the 'advanced' tab near the top of the window.  select the 'advanced' button found the 'advanced' tab page.  click on the folder labled 'users' found in the left hand pane and a list of all users should appear in the right pane.  double click on the user name found in the right hand pane and a windows titled 'username peoperties' should open.  uncheck the box next to 'account is disabled' and then 'apply'.  reboot and try to log on normally.

this begs teh question as to why mcafee/'cox' internet security marked the account as disabled in the first place.  there is possibly some malware.  but quite frankly, mcafee and symantec these days is about as foul as most malware.  i would recommend a free antivirus product like free.avg.com or grisoft.com and also downloading and scaning the system once or twice with malwarebytes.org free program.