Killing the silver dragon (any dragon) is piss easy.
The easiest way is to get a wand of cloudkill and recharge it.
You may find a wand with something small like 2 or maybe 8 or 10 spells in it.
Buy it back, you now have 50 spells in it (stealing it is better though - I now have over 1 million gold from selling and stealing 16 wands back and forth - took 15 minutes though)
When you find a dragon, stand just out of reach so they can't see you.
Repeatedly cast the cloudkill near them but not close enough so they can see you (this is very close to maximum visible range of the character).
About 20 will drop any dragon easily. 10 if you are lucky.
The first baraage doesn't do that much, but if you cast a hole lot quickly, the dragon will heal him/herself once or twice, but then they seem to completely loose their immunity to magic (so they can cast heal on themself).
There is nothing useful on the silver dragon apart from her blood though. You have to have an evil character to wear the flesh +5 aswell. Oh, and you (well at least I) don't loose any repu for killing the dragon, and you do get experience.
And no, you can't pickpocket the blood off her (like you can with carsomyr apparently) - yes I spent 5 minutes trying, you can't get close enough.
Veldrik - hater of giant six foot, pointy eared, "I love nature and magic" elves and anyone who uses the words "l33t" or "hax0r"
Veni Vidi Velcro
I came, I saw, I stuck around
Oh yeah, if you want a screen shot of the loot, I can probably take one and post it here.
[This message has been edited by Veldrik (edited 02-15-2001).]