Mike,
Have you considered being a Lucent engineer? Stil lplenty of people buying them and they need installing. Also other companies offering similar products. Might not be as much of a wrench for you and the CV would dovetail better.
Still if you are interested in the MCSE idea, talk to people you know who have one and ask what they actually do. Don't do the course if you don't fancy doing the work.
I am an MCSE and I love what I do. Just don't tell my boss...
It is a lot of work and the upgrade to 2000 even for so much experience is difficult. If you have an aptitude for computers and networking, can learn quickly and are not afraid of hard work then go for it.
As to the money, it sounds ok. Not cheap, but you are getting a lot of days back at school. A+ gives a firm grounding in everything needed to get along, some irrelevent bits and some stuff that you possibly don't need any more but it is a good grounding for someone coming into the field. Your electronics knowledge should be useful.
Check the job ads around you to see if there is likely to be a job in it at the end of the course. And keep us posted - there are over 100,000 people on TT who can help you!