Microsoft is expanding its Windows OneCare beta program, opening the door for more testers to trial the company's comprehensive PC protection and maintenance package. Initially OneCare will include antivirus and firewall protection, an automated PC tune-up, and backup and restore functionality."We have made excellent progress fixing bugs and adding new features. We are now at a point where we would like to begin expanding our group of beta testers, and invite you extend Windows OneCare beta invitations to your friends and family," Microsoft wrote in an e-mail. Those interested can apply for the beta program by visiting Windows Beta with the guest ID: OneCare.