The best replacement for virtual pc is vmware.

The best alternatives to virtual pc are rated as following:
★★★★★  vmware
★★★★★  virtual server
★★★★  virtualbox
★★★★  parallels
★★  vmware workstation
★★  dual boot
★  virtual pc 2007
★  boot camp
★  hyper-v
★  xp mode
★  virtual box
★  windows xp mode
★  vmware player
  vmware fusion
  parallels desktop
  hyper v
  virtual server 2005
  microsoft virtual pc
  qemu
  vmware server
  guest pc

Your alternative for virtual pc is not listed? Suggest!
Speaking about virtual pc, one probably shouldn't forget about xp mode.

Other search terms related to virtual pc and their ratings are:
★★★★★ xp mode
★★★★ hardware virtualization
★ windows xp mode
You have in mind a companion for virtual pc and it is not yet here? Propose!



Google Trends

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virtual pc
vmware
virtual server