Seule
Explorer
I have both GURPS Discworld, and GURPS Discworld Also. Being written by Pratchett, I have to assume that they are pretty close to how he sees the world. However, while I like the books pretty well themselves, I've never tried using them because I dislike the GURPS system. Using the books as a basis would be a good start for d20.
I'd put Granny at around 5-7th at the start of the series, maybe as high at 15th now. However, as has been pointed out, level really doesn't apply to these characters, which is why a point-based system like GURPS works well. The characters can be given the abilities and flaws that suit them, and don't get a whole lot of other things as well for going up in level.
I think the main problem you'll run into with any conversion is that everyone is going to have different ideas of how to do everything, so it pretty much has to be an individual project, that others probably won't use. You could try asking pterry himself though, he's active online at the alt.books.pratchett usenet newsgroup, and you can probably just email him with the address he gives there. Plus you can find some interesting discussion.
Pratchett is a very very cool guy, with at least some gamer in him.
--Seule
I'd put Granny at around 5-7th at the start of the series, maybe as high at 15th now. However, as has been pointed out, level really doesn't apply to these characters, which is why a point-based system like GURPS works well. The characters can be given the abilities and flaws that suit them, and don't get a whole lot of other things as well for going up in level.
I think the main problem you'll run into with any conversion is that everyone is going to have different ideas of how to do everything, so it pretty much has to be an individual project, that others probably won't use. You could try asking pterry himself though, he's active online at the alt.books.pratchett usenet newsgroup, and you can probably just email him with the address he gives there. Plus you can find some interesting discussion.
Pratchett is a very very cool guy, with at least some gamer in him.
--Seule