Thank you for the contribution, danielm, but keep in mind that your report will only work in Lansweeper installations that were upgraded from version 4.X to 5.X. Users with new 5.X installations won't have the "upgrade_" views and will need to run the query below instead.
Select Top 1000000 tsysOS.Image As icon,
tblAssets.AssetID,
tblAssets.AssetName,
tblAssets.Domain,
tsysOS.OSname,
tblAssets.Description,
tblAssets.Firstseen,
tblAssets.Lastseen
From tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tblServices On tblAssets.AssetID = tblServices.AssetID
Inner Join tblServicesUni On tblServicesUni.ServiceuniqueID =
tblServices.ServiceuniqueID
Inner Join tsysOS On tsysOS.OScode = tblAssets.OScode
Where tblAssetCustom.State = 1 And tblServicesUni.Caption Like '%LansweeperRC%'
And tblServices.Started = 1
Order By tblAssets.Domain,
tblAssets.AssetName