HARDWARE.....Atleast p4 pentium,windows xp service pack2 ,512 RAM is recommended.
ups...if you face frequent power cut.....better go for both ups and invertor .
software..... : obviously METASTOCK.....because most of them use it.
data feeds...... do you need real time data or end of day data???
Internet connections: at least two,if one fails you can switch over to other.
lastly,most important thing is if you go on surfing internet your system will slow down badly due to spyware and allsorts of unknown code getting automatically loaded in to your pc.. and frequent hangs of operating system....
question is how you keep it neat and clean is the issue to be solved.
it is very essential that your system never hang while trading..( this is one of the reason why i recommend 512MB RAM)
Enjoy trading ...
suba