This report should get you started.
Select Top 1000000 tblAssets.AssetID,
tblAssets.AssetName,
tblCPlogoninfo.Ipaddress,
tblCPlogoninfo.Domain As Userdomain,
tblCPlogoninfo.Username,
tblCPlogoninfo.logontime
From tblCPlogoninfo
Inner Join tblAssets On tblAssets.AssetID = tblCPlogoninfo.AssetID
Where tblCPlogoninfo.logontime >= DateAdd(hh, -24, GetDate())
Order By tblCPlogoninfo.logontime