Something like this -
LHR-DEL-HKG-BKK-SIN-SYD-AKL-SCL-PUQ//GIG-SCL-LPB//UIO-SCL-CCS//GUA//CCS-LHR
- goes where you want to in a 4 continent configuration but it isn't pretty. Standard return fares between CCS and GUA are about US$700. The difference between a 4 and 5 continent fare ex-LHR is slightly less than that and you would get to fly around NA a bit, if you so desired. In addition, you will need to buy one extra segment in SA to get from UIO to CCS as you have to go back through SCL. That will cost you another £75. Finally, you have to end your trip in the UK as that is where you started it.
[This message has been edited by ExMo (edited 08-18-2003).]