Windows 7 - Windows Remote Desktop between W-7 Pro & XP Pro

Our office and its wide area network uses XP Pro on all computers. I'm ordering two new desktops and have the option to go with Windows 7 Pro or XP Pro.

I absolutely need the capability to connect to remote sites that are on XP Pro computers (using windows remote desktop). And, I also need to be able to manage my desktop computer (potentially Windows 7 pro) from one of the XP Pro computers.

• Can I remote desktop to XP Pro computers from a W-7 (pro) system?
• AND, Can I remote desktop connect to the W-7 (pro) system from an XP Pro desktop (and have full capability)?
• Can I remotely access the W-7 pro Harddrive through DOS commands in the 'cmd' run function? (and visa-versa)???

I'm a relatively good computer user - no where near being an expert - but instructable.

Thanks,
Vidiot!!

Here you go: Remote desktop Software

Please don't post in multiple threads with the same issue. It makes things hard to keep track of.

Sorry 'bout that ... just need an answer pretty quickly.