Another good place for information is the
NAIC
Netstock Direct has plan descriptions online. Free, but you must register. Use a "spam" e-mail account.
Drip Central also has useful information.
There are a number of direct plans out there. I've been investing in DRIPs for 20 years now. Keeping up with the dividends can be a pain come tax time. Capital gains, if you sell after a number of years, can also cause some frustration. However, if you stay organized, it is a breeze.
Does anyone have experience with this? Do you have to be enrolled in some sort of program to take advantage of it (like, with monthly or yearly fees)? Or do the fees end right after your initial purchase of stock from the company (if any)?
To answer your questions: On some plans, you must purchase the first share through either a broker, Sharebuilder, or the NAIC. Other plans are direct investment. Some plans have investment and dividend reinvestment fees. For example, I started in with Upjohn which was outstanding and had no fees. When they became Pharmacia-Upjohn, they charged a really high reinvestment fee on dividends. I said screw that, took the dividend checks directly and invested the dividends in other companies. Other companies like National City Corp, who I've been with for many years, have no fees. Also look around. Some plans allow you to reinvest dividends at like 3 percent discount.