Select Top 1000000 tblAssets.AssetID,
  tblAssets.AssetUnique,
  tblAssets.Domain,
  tsysOS.OSname,
  tblAssets.Description,
  tblComputersystem.Lastchanged,
  tsysOS.Image As icon,
  tblAssetCustom.State
From tblAssets
  Inner Join tblComputersystem On tblAssets.AssetID = tblComputersystem.AssetID
  Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
  Inner Join tsysOS On tblAssets.OScode = tsysOS.OScode
Where tblAssetCustom.State = 1 And tblComputersystem.PartOfDomain = 0
Order By tblAssets.AssetName