Are you sure "Printers: Printed pages" is a stock report? I don't show it on my installation.
Assuming not, richgar4par, the printed page counts can be found in tblAssetCustom. See if this is enough to get you started:
Select Top 1000000
tblAssets.AssetID,
tblAssets.AssetName,
tsysAssetTypes.AssetTypename,
tsysAssetTypes.AssetTypeIcon10 As icon,
tblAssets.IPAddress,
tblAssets.Lastseen,
tblAssets.Lasttried,
tblAssetCustom.Printedpages,
tblAssetCustom.PrintedMonoPages,
tblAssetCustom.PrintedColorPages
From
tblAssets
Inner Join tblAssetCustom On tblAssets.AssetID = tblAssetCustom.AssetID
Inner Join tsysAssetTypes On tsysAssetTypes.AssetType = tblAssets.Assettype
Where
tsysAssetTypes.AssetTypename = 'Printer'
And tblAssetCustom.State = 1