64-bit Windows

Select Top 1000000 tblAssets.AssetID,
  tblAssets.AssetUnique,
  tblAssets.Domain,
  tblAssets.Description,
  tblComputersystem.Lastchanged,
  tsysOS.Image As icon
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 tblComputersystem.SystemType Like 'x64%' And tblAssetCustom.State = 1
Order By tblAssets.AssetName