Compatibility What operating systems do you support?   What PC specification/operating system and equipment will I need?   What Apple Mac specification/operating system and equipment will I need?   Are all BT Calling Features supported?   What is the effect of installing ADSL on my alarm line?   Will my digital switchboard work with an ADSL connection?   Which applications are compatible with BT Yahoo! Broadband?   Which BT services/other services are incompatible with BT Yahoo! Broadband?   Can I use my firewall with the BT Yahoo! Broadband service?   Can I use a dual processor with BT Yahoo! Broadband?   Does BT support network configurations?   Can I have 'other services' with my broadband (i.e. satellite television, answer phones)?   Can I have wireless network with my BT Yahoo! Broadband products?