I've had this PC for a year now, its been pretty reliable. Its a good value package with Windows XP Pro, a pretty fast processor and a reasonable amount of RAM at 512Mb.
I'm using it for general admin work, some website editing and browsing, and it is more than adequate.
I've teamed it with an Acer AL1916W 19" Widescreen monitor, read my other review on that...
Its a reasonably small tower case, but is suitable for expansion with extra hard drive bays and power cables and room for PCI cards and extra optical drives.
There isnt a recovery CD supplied with this machine, there is a hidden partition on the hard drive which you can boot into to run a recovery process to reinstall Windows. There are bundled Acer e-Widget software tools with the Windows install, to control processor speed, access to drives and memory usage etc.
I had to reinstall Windows once as the Acer e-lock management widget, locked all my USB ports and optical drives for some reason. Also the onboard sound card software has freaked out a few times, the microphone socket is unreliable.
I have also chosen to upgrade the memory, as the supplied 512Mb, does struggle at times. Its easy to do as there are spare memory slots and I have added another 2Gb, which has perked up performance.