If your just using the pc for email and web access, an old pc will do the job fine. Pick up a 2 year old pentium 500 for about $500.
If however, you want to play games, watch video clips, and number crunch, you will need a Pentium 800+ and a good video card. Nvida G-Force cards are the safest option.
For an internet connection, ADSL is pretty cost effective, and anything with around 4gig dl allowance per month should do the trick pretty easily.
Check out www.whirlpool.net.au
and look at the Broadband Choice section for ISPs in your area and deal comparisons.
Chevs may go, but theres nothing like a HO!
Proud LSUG Member, and 9" Nodular Iron driveline test pilot.