Recognize these UA entries?

from uunet subscribers

[toadhall]

These appear in the UA of two visitors using uunet:
MSN 6.1; MSNbDELL; MSNmen-us; MSNcIA
Could someone fill me in?

[Brett_Tabke]

Which part has you baffled? Those are the branding string for ie.

MSN is the MSN ISP version of IE.
Dell is for the branded version that Dell computers uses.
MSN IA is MSN Internet Access.

I don't recognize the men-us, but Google does - have a go at a search.