The following custom SQL report will provide the Dell Service Info details found on a Dell computer's Computer Inventory page along with the warranty end date and days remaining. (Note the two highlighted 'KBSYS.' parts - as of version 5.4, these tables are no longer in KBSYS.  If you are using version 5.3, leave the query as is.  If you are on 5.4+, delete both highlighted parts, including the '.' after KBSYS).

Select
  M.NAME As 'Computer Name',
  DA.SERVICE_TAG As 'Service Tag',
  DA.MACHINE_DESCRIPTION As 'System Type',
  Date(DA.SHIP_DATE) As 'Ship Date',
  DW.END_DATE As 'Warranty Expiration Date',
  IF(DATEDIFF(DW.END_DATE, NOW()) > 0,
    Concat(DATEDIFF(DW.END_DATE, NOW()), ' days remaining'),
    'Warranty has expired') As 'Warranty days remaining'
From
  KBSYS.DELL_ASSET DA Left Join
  KBSYS.DELL_WARRANTY DW On (DW.SERVICE_TAG = DA.SERVICE_TAG) Left Join
  MACHINE M On
  (M.BIOS_SERIAL_NUMBER = DA.PARENT_SERVICE_TAG Or
  M.BIOS_SERIAL_NUMBER = DA.SERVICE_TAG)
Where
  M.CS_MANUFACTURER Like '%dell%' And
  M.BIOS_SERIAL_NUMBER != '' And
  DA.DISABLED != 1