Hi, after searching for solution on "spyware blaster" web-site, I went "here"... Here it's my problem & my PC details: browser :mozilla 1.7.12 sys :Vista familial protect :windows defender, AVG & spybotSD connex' :internet 56k SpywareBlstR(4.1) cant reconize browser-mozilla...I followed instructions of this web page = https://www.javacoolsoftware.com/support/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=39&ratingconfirm=1# ...no more success. I tryed to locate the "registry.dat"file, it's only 2Ko in size. It's locate at :C:\Users\p...l\AppData\Roaming\Mozilla And at :C:\Program Files\Mozilla\defaults\profile = there's no "registry.dat"file. Does someone got some tip to solve this ? NOTE : w/my old PC I was running windowsXP pro and spywRBlstR had always reconize mozie !!! thx , Pascal.