installation on 128MB system
 

I have P3 (1.13ghz) system with 128 MB ram. I got openSUSE 10.2 and wish to install it on the same system. Will increasing the swap size help in 'making up' for the low RAM?

Also, should I use GNOME or KDE or some other manager?

Both GNOME and KDE will be a bit slow with such low ram even if you use a lot of swap space (although a lot of swap will be good and it will compensate for the low amount of ram). If their performance is not very good, try something like XFCE.