I needed to do this so here's what I came up with.  I'm quite proud of this SQL statement so had to share.  Since we can't use variables the charindex functions have to be repeated a gazillion times.  Caution: It really bogs down the report editor.
Select Top 1000000 tblAssets.AssetID,
  tblAssets.AssetName,
  tsysAssetTypes.AssetTypename,
  tsysAssetTypes.AssetTypeIcon10 As icon,
  tblAssets.IPAddress,
  tblAssets.Lastseen,
  tblAssets.Lasttried,
  tblSoftwareUni.softwareName,
  tblSoftware.softwareVersion,
  Convert(int,SubString(tblSoftware.softwareVersion, 1, CharIndex('.',
  tblSoftware.softwareVersion) - 1)) * 10000000 +
  Convert(int,SubString(tblSoftware.softwareVersion, CharIndex('.',
  tblSoftware.softwareVersion) + 1, CharIndex('.', tblSoftware.softwareVersion,
  CharIndex('.', tblSoftware.softwareVersion) + 1) - CharIndex('.',
  tblSoftware.softwareVersion) - 1)) * 1000000 + Convert(int,Case
    When CharIndex('.', tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1) + 1) = 0 Then SubString(tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1) + 1, Len(tblSoftware.softwareVersion) - CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1))
    Else SubString(tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1) + 1, CharIndex('.', tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1) + 1) - CharIndex('.', tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion) + 1) - 1)
  End) * 100 + Case
    When CharIndex('.', tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion) +
      1) + 1) = 0 Then 0
    Else Convert(int,SubString(tblSoftware.softwareVersion, CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion,
      CharIndex('.', tblSoftware.softwareVersion) + 1) + 1) + 1,
      Len(tblSoftware.softwareVersion) - CharIndex('.',
      tblSoftware.softwareVersion, CharIndex('.', tblSoftware.softwareVersion,
      CharIndex('.', tblSoftware.softwareVersion) + 1) + 1)))
  End As VersionNumberInteger
From tblAssets
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
  Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
  Inner Join tblSoftware On tblAssets.AssetID = tblSoftware.AssetID
  Inner Join tblSoftwareUni On tblSoftwareUni.SoftID = tblSoftware.softID
Where tblSoftwareUni.softwareName Like 'Java [678]%' And tblAssetCustom.State =
  1