Can only connect to network devices using an IP address

[philjayj]

Hi, I have a small home network which consists of a modem, router and gigabit switch. I recently added a Windows 7 machine to the network, the Windows 7 machine is unable to connect to Windows XP Pro devices using RDP by using the PC name, it will only work when using the IP address.

Any ideas/suggestions would be great.

Thanks

Phil

P.S. I have also made sure the PC is part of the same workgroup in case that is of any significance.