I decided to buy a cheap solid state drive (compared to other brand names) to speed up boot and response times on a old Dell which had a drive failure.
Installation was easy, just screw drive into bay. (You might need to buy a OCZ 2.5" to 3.5 Inch Mounting Bracket for Solid State Drives
as this from Amazon does not come with it included unlike some other ocz drives.)Go to bios to setting make sure OCZ and usb interfaces are selected. Stick in the Windows 7 disc and your up and running.
On the windows performance index the drive is a 7.2 out of 7.9 which was a huge improvement compared to my previous Seagate 7200rpm. I installed windows 7 32bit which took up about 11 GB including updates out of 27.9GB
The drive has a very small capacity, so those who have or want to install Windows 7 64bit may need up to 16 to 17Gb. I would recommend getting the 60gb solid stated drive if your planning on this.
I only use this drive to install key programs and do not download onto this drive. If you get a solid state drive install a secondary sata drive or use a usb/firewire drive to download or store data on.
The machine feels like a brand new computer just from switching from a sata mechanical to a solid state drive and is highly recommended. Note this is sata 2 and there are faster sata 3 drives. As most old computers (mines over 4 years old) won't benefit from sata 3. I decided to go for the cheapest one.
I have a new I7 gaming machine and would recommend the Corsair CSSD-F120GB3-BK Force Series 3 120GB Solid State Drive - Read 550MB/s, Write 510MB/s
which would benefit from the sata 3 speed increases.