I have no knowledge of mobile phones.I bought a second hand HTC desire. Is there an installation disc or something I should have as windows xp doesn't seem to recognise my ph. It only shows in control panel that H drive is connected. Opening that drive shows no content . I was told the ph was unlocked but how would I know? The telstra logo(ph carrier) also comes up on startup . I don't have a sim card installed but that shouldn't make a difference?