she doesn't have an antivirus program installed
w00t .. don't have a antivirus ?? whay don't you tell her to try AVG its free .. . and for the home page changing . CoolwebSearch trojan , i always trust CWShredder . it has never let me down when others have failed. the blue window seems to a popup window try pressing ALT+F4 . you should definately consider installing a adware/spyware removal tool . i would reccoment AD-Aware

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yep jenjen thats what i ment for home page hijacks i think CWShredder works fine. i also recommend AD-Aware, thats what i use i use them both and they both in combination works fine for me. CWShredder takes care of the home Page Hijaks/cool Web Search trojans and Ad-Aaware gets the Adwaresand spywares

and thanx for spotting the mistake i corrected the link