Hehehe.
OK, so, real answer, with explanation:
Electrolytic capacitors fail over time and weaken with age. There are several reasons for this, that I won't go into here. Safe to say, a thirty year old electrolytic isn't usually in as great a shape as it should be - it might still be working, but not as well as it should. A common repair, then, is to simply replace all of them in one go. For people like me that fix lots of monitors, I buy capacitors in bulk by value. But for someone that only needs to do a few monitors, it's much simpler to buy a "kit" of replacement capacitors for a givin monitor. Each model of monitor uses different values of caps and in different quantities - so a kit for a G07 won't have all the necessary parts for a 4600. But, assuming you order the right kit, it should contain all (or most) of the commonly stressed parts in the monitor.
A cap kit will fix things like warped and distorted picture, folded over picture, washed out colors, touchy sync, etc.
Further repairs for completely dead monitors usually include a cap kit - since while you've got it on the bench, there is no reason why not to re-cap it. The Electrohome G07, for example, is well known for it's blown flybacks. So, you can get a flyback kit with the flyback, HOT, fuses, and all the caps - this fixes like 90% of dead G07's...
-Ian