win xp won't boot but dos does,trying to save pics

i'm trying to help my son who managed to get his pc infected with the virus "xp antimalware 2010". after i googled this virus on my pc, i found a procedure to remove it. The fix was a registry change. I tried it and now windows wont start. I can get to a dos prompt and i did a dir and it shows his directories including his docs. At this point i would like to save his pics before doing a win xp reinstall. 1. could i copy his pics to a flash drive? 2. if so, how would i go about installing the flash drive(usb) without windows, using dos? 3. or is there a better way anyone can suggest?* Thanks in advance for any help.

 

It's must quicker and easier to take your son's hard disk out and slave it into your own or another computer, both to scan for and properly remove the malware, to repair the boot configuration and transfer the data to a safe place. Then, back in his own computer, he could perhaps use System Restore to correct his Registry changes. Another route to partial success in the above would be to install Linux on to his hard drive - that gives him access to his files but not the ability to fix the Windows system.