You'd be better off with a portable minidisc recorder or something, that way you aren't restricted to being sat near your PC, because background noise will really show up.
Shure SM58 is a decent mic but possibly a little 'tinny' for this kind of thing. You really should stretch to a condenser if you can. A Behringer C1 condenser will only set you back around £50.
[edit]
£41 including shipping from eBay.
Shure SM58 is a decent mic but possibly a little 'tinny' for this kind of thing. You really should stretch to a condenser if you can. A Behringer C1 condenser will only set you back around £50.
[edit]
£41 including shipping from eBay.