1999 Volvo S70 ENGINE CODE NEED URGENT HELP!

My volvo S70 has had these issue for nearly a month now. Sometime when am driving, the engine check ligh come on and the ABS lights and also the llittle light illustrating the skid comes on. While this is happening, the arrow light comes on and begins to flash. Causing the car sound abit loud. When I come to a stop, the car moves real slow even after stepping on the gas peddle all the way down. The car only pick ups momentum whne the ABS break light go off. I have to down shift to third gear to avoid being hit by other motorists and I'd imagine this is not good on the transmission. Yesterday was my last stroll because now the check engine light is on and hasn't gone off and there now seems to be some noise coming from the bottom of the vehicle aroung the gear shift area. This noise sounds more like the exahust or muffller area under the vehicle. Here are the codes to help explain these symptoms:
-P0442
-P0420
-P0600
-P1057
-P1054
-P0722
The guy at advanced auto used his meter to read these codes. Please, if you can, provide me with some information or advise me on what I should do or atleast what do I need to fix first. I have avoided going to the VOLVO dealer for obvious rea$on$. Please help if you can. Thanks!