I don't know about Bahco, but I think you don't appreciate that for most people the idea of swapping hard drives is to "technical", and a lot of people are happy with the speed a standard HD offers.
Another vote for not re-formatting.
Get rid of all the junk, boost your RAM and, if need be add some extra storage, job done.
Just got this recommendation from ebuyer:
http://www.ebuyer.com/407538-zoosto..._medium=email&utm_campaign=b2c_monday[/QUOTE]
No personal experience of them, but they seem to have a reputation for spectacularly bad power supplies. The price suggests it's earned that reputation. I spent nearly a third of that on just the PSU for a similarly specced build, and don't expect to see it die this decade.
Never reformat and reinstall the OS, you should never need to unless you have a virus you really really can't kill (0.1% chance), it's a myth that it will improve performance any more than a competent tidy up will.
A 'competent tidy up' can take far longer than a reinstall on many machines, and isn't done by a magic tool like CCleaner (boy, the number of times I've seen that installed and regularly run and the machine is STILL in a state). Especially with machines which have been around the block more than a few times, it's easier to prepare a new OS image with updates and most software preinstalled (which goes a LOT faster on my build boxes than some old Dell!) than to try and clean them up.
Neither a full cleanup nor a proper reinstall are easy options for the technically limited (no offense to anyone intended).
That's only half the story, there's the registry which gets bigger and bigger, also the security database, which never shrinks, so yes a clean install is better than a simple defrag / cleanup.
Another vote for not re-formatting.
Get rid of all the junk, boost your RAM and, if need be add some extra storage, job done.
I'm not sure you know what the registry does, it doesn't magically grow.
It's a list of configuration settings, when a programme gets deleted, the registry entry can be left, leaving it doesn't slow down your computer much, it just sit's there doing nothing as there is no programme using it.
XP disc defrag doesn't touch the registry, so new registrys can become spread out over the years, that's where the idea comes from that a clean install is needed, I doubt the OP is using XP in a 4 year old dell, likely Vista which works differently. And even if using XP, you have to be installing and installing lot's of stuff, again likely irrelevant.
And security database, eh? just delete the file, not that it matters, he's not running a server, it won't slow down the computer.