Julia, believe jb on RegCure. A waste of money, imo. What it detects are benign and useless things like unassigned file extensions, stored "history" items like MRU [most recently used] lists for applications, and some of the keys and values for uninstalled apps. It won't actually fix anything except by pure chance. Your registry is huge, 1400 items are as nothing. And they probably rarely get read by anything; some are revolved out.
Save the firefox 3.04 file to another computer, transfer it by thumbdrive, run it to install; if FF will browse it will give us an idea as to which direction the fault lies.
Turning off your firewall and turning on the Windows firewall may help, may not.
A problem may arise in that all? browsers use a lot of native Windows OS files so the fault may carry over to FF. But we shall see. Opera is another good browser.
MBAM will be difficult to update without a connection, if you wish to employ it as a check. But download, save the installer file from
http://www.majorgeeks.com/Malwarebyt...are_d5756.html, then dl this latest updates file:
http://www.gt500.org/malwarebytes/mbam-rules.exe , both to a thumdrive.
Run the installer, when it completes uncheck the Launch and Update boxes. Next, dclick the mbam-rules.exe file, it will install into MBAM.
Start MBAM via the icon and ...
Select "Perform Quick Scan", then click Scan; the application will guide you through the remaining steps.
ENSURE that EVERYTHING found has a CHECKMARK against it, then click Remove Selected.
If malware has been found [and removed] MBAM will automatically produce a log for you... do not click the Save Logfile button.
When it completes examine the log: if some files are listed as Delete on Reboot then restart your machine before continuing.
Post the Notepad log [it is also saved under Logs tab in MBAM].