Have any of you used WinXP's Remote Desktop tool to control remote PCs?

If so:

1. What are your experiences like? Is it fast, stable, robust etc?
2. How does it compare with PC Anywhere in terms of speed?
3. Can it be used with a modem dialup connection?
4. Is it only with WinXP or is also compatible with Win2000?
5. If it isn't an inherent part of Win2000, then can it be used FROM an XP Professional workstation to control a Win2000 PC or Server?