I use DSL alot. it is a phenominal distro for a 50 meg os. a 4 gig drive is fine. I set someone up with it for a backup machine in a 2.5 gig hdd. it's nice as a backup system, has firefox, and you can add their optimized programs easily with myDSL icon. it will run very nicely on that machine from hdd, it will be pokey if run live, as it really needs to have some memory to run.
IF you wish, I'll write you up a quick howtoo for installing it standalone. Adding it to an existing install is a bit trickier, depending on which bootloadre you run.
On thing that is differrent is that the main "start menu" is accessed by right clicking on the desktop, and scrolling thru the menus. actually very nice once you get used to it.
ahh what the hell:
DSL standalone install guide:
Boot the live cd.
Open a terminal window
enter: cfdisk
this starts the partitioning tool, similar to fdisk in dos.
delete all your present partitions.
Create an install partition at the start, size it to leave about 200-300meg free. make it type of linux (83 in the list).
Create the remaining as swap, type 82.
Use the write option to create the new partitions.
this should leave you with 2 partitions, hda1 for the os and hda2 for swap.
next type:
mkswap /dev/hda2
this will format the swap partition, dsl will see it and use it when it boots from hdd.
close the terminal window.
Right click on the desktop, go to programs/tools/ install to harddisk and run it.
Say no to ext3 on slow machines/hdd's when prompted
sya yes when asked if you want to install a bootloader. I believe they use grub now, but it may have a lilo option. your choice, on a standalone install, it really doesn't matter which.
it will copy all the files over, install the bootloader, and the window will close.
remove the cd and reboot.
Create a root password.
Create the password for the dsl user. (you can create other users, but I just live with the dsl user) (lazy on my part)
on disk, it is basically a debian install. running fad should foollow the normal linux install.
Enjoy what is a really well done OS. (I've used it since release 0.8 whenit was not as polished as it is now)