SAN FRANCISCO (Reuters) - A new computer worm that disguises itself as an e-mail from Microsoft Corp. MSFT.O is spreading, computer security firms warned on Monday. The e-mail containing the worm, dubbed Palyh or Mankx, appears to come from support@microsoft.com, but is not from the software company. When the attachment is opened, the worm copies itself to the Windows folder, scoops up e-mail addresses from the hard disk and starts sending itself out, said U.K-based Sophos. The malicious program can spread itself to other Windows machines on a local area network, anti-virus vendors said. It also can secretly install spyware...