For you Nige, we will try

For an OR condition, would something like this work?

select distinct p.str_href
from tbl_PageWord p
join tbl_Words w on (p.Int_Word = w.Int_Word)
where w.str_word in ('Beer', 'Chocolate', '4WD')

Providing I understand your schema, it should be pretty quick

For an AND condition, try union

select p.str_href
from tbl_PageWord p
join tbl_Words w on (p.Int_Word = w.Int_Word)
where w.str_word in ('Beer')
union
select p.str_href
from tbl_PageWord p
join tbl_Words w on (p.Int_Word = w.Int_Word)
where w.str_word in ('Chocolate')
union
select p.str_href
from tbl_PageWord p
join tbl_Words w on (p.Int_Word = w.Int_Word)
where w.str_word in ('4WD')

You could off course change the IN clause to an =, but if you keep it
as IN then it will allow you to mix ANDs and ORs together. This
should work providing you don't get the query > 64K. There may be
more efficient ways if you are expected large numbers of members in
the AND clause.

Adam