Question : Cannot connect my Laptop to 3com OfficeConnect 3CRWDR100A-72

I cannot connect my laptop (Acer 9410 series) to my router -3com OfficeConnect 3CRWDR100A-72(it has the latset firmware installed) -throught air (wireless).The wireless led on the router is on.The same laptop connect flawlessly with a sagem modem/router (wireless) at my work so the problem appears to be on the 3com router side.
Any idea how to fix that?

Answer : Cannot connect my Laptop to 3com OfficeConnect 3CRWDR100A-72

Yep... guessing MAC Authentication may be enabled.

Assume, you have the correct security settings on both devices (laptop agrees with the router)...

If you changed keys with the new router, you must change them on the laptop as well.