Installing a Bottom Bracket

Hi, Thanks for the replies. Its just a cheapo Shimano square taper BB (UHN26 73-113 mm). I didn't want to spend too much until I know what I'm doing!

In that case just do as WiganWill recommends. Be slightly more careful with the crank arms (There's a few long threads about this). They need to be pretty tight, but may loosen with use. In which case, just remove the slack.

Well, I have never used one. I would rather have one, I guess, but I don't. BBs just need tightening as tight as you can tighten them. A big adjustable spanner has always done the trick for me. If it starts to come loose, re-tighten it. Repeat until satisfied.