ok your welcome. You can remove combofix like this:
start>run and type in:
combofix /u
click ok or enter
Note: there is a space after the x and before the /

Keep MBAM and always check for updates before a scan. Its good practice to keep it updated even if you dont scan with it that much.

You can make a new restore point. The how and why:

One of the features of Windows ME,XP and Vista is the System Restore option, however if malware infects a computer it is possible that the malware could be backed up in the System Restore folder. Therefore, clearing the restore points is a good idea after malware is removed.

To reset your restore points, please note that you will need to log into your computer with an account which has full administrator access. You will know if the account has administrator access because you will be able to see the System Restore tab. If the tab is missing, you are logged in under a limited account.

(winXP)

1. Turn off System Restore. (deletes old possibly infected restore point)
On the Desktop, right-click My Computer.
Click Properties.
Click the System Restore tab.
Check Turn off System Restore.
Click Apply, and then click OK.

2. Reboot.

3. Turn ON System Restore.(new restore points on a clean system)
On the Desktop, right-click My Computer.
Click Properties.
Click the System Restore tab.
UN-Check *Turn off System Restore*.
Click Apply, and then click OK, then reboot

If all is good, heres some tips for you:

Reducing Your Risk To Malware:
The Short Version:

1) It is essential to Keep your OS,(Windows) browser (IE, FireFox) and other software up to date to "patch" vulnerabilities that could be exploited. This is also true for web based application like Java, Adobe Flash/Reader, QuickTime etc. Check there status here.

2) Know what you are installing to your computer. Alot of software can come bundled with unwanted add-ons, like adware, toolbars and malware. Do not install any files from ads, links or popups.

3) Install and keep updated: one antivirus and two or three anti-malware applications. If not updated they will soon be worthless. Scanning frequency is a function of your computer habits.

4) Refrain from clicking on links or attachments you receive via E-Mail, IM, Chat Rooms or Social Sites, no matter how tempting or legitimate the message.

5) Don't click on ads/pop ups or offers from websites requesting that you need to install software to your computer.

6) Don't click on offers to "scan" your computer. Install ActiveX Objects with care. Do you trust the website?

7) Set up and use limited accounts for everyday use, rather than administrator accounts. Limited accounts can help prevent *malware from installing.*

8) Install and understand the limitations of a software firewall.

9) Consider using an alternate browser and E-mail client. Internet Explorer and OutLook Express are popular targets for malicious code because they are widely used. See also: Hardening or Securing Internet Explorer.

10) If your habits include: warez, cracks etc or you install files via p2p networks then you are much more likely to encounter malicious code. Do you trust the source? Do you really need another malware source?

A longer version in link below.

Happy Safe Surfing.