Make sure the raditor cooling fan is working. It sounds like it has a problem.
No.
The 2001 Cavalier has the regulator built into the alternator. As this is an integrated component the alternator and regulator are changed as a single unit.
check or replace thermostat
A desktop theme can be changed on Vista by clicking on the Start button, Control Panel, Appearance and Personalization, Personalization and then clicking on Desktop Background. On the Desktop Background page you can choose a picture for your desktop background.
Recommended at every 25,000
call a auto parts store, have them see if the parts are the same.
The process of changing the transmission seals will depend on where the seals are located. Some of the Cavalier seals are changed easily, while some may require the transmission to be removed.
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Check the front driveshaft.
Typically about 80-90 thousand miles
Clicking means metal on metal and no oil in between. Check your oil, oil and filter changed? Don't drive it if it gets worse - there is a glog somewhere - or it is too late already.
There is no transmission dipstick on a 92 Cavalier. The fluid is checked through a plug in the side of the transmission from underneath the car. It is most commonly checked while the vehicle is on a lift having the oil changed.