Multiple Queries

I'm writing an ASP page for a project and it requires multiple queries.
However, I'm trying to combine multiple SELECT statements, but can't
figure out a way that actually works.

Basically, here are the SELECT statements I want to combine:

SELECT * FROM schoolrequest WHERE SLid=10

SELECT SLlastName FROM academicoffice
WHERE schoolrequest.SLsendToId=academicoffice.AOid
SELECT SLlastName FROM academicoffice
WHERE schoolrequest.SLbillToId=academicoffice.AOid
SELECT SLlastName FROM academicoffice
WHERE schoolrequest.SLrequestorId=academicoffice.AOid

SELECT * FROM diaryentry WHERE diaryentry.DEkeyValue=10
AND diaryentry.DEdeletedDate IS NULL

The academicoffice table just contains basic contact info, but needs to
be used 3 times in the query to get specific contact info for 3
different contacts(SLsendToId, SLbillToId, SLrequestorId)

The diaryentry table contains info entered in by students. The
DEkeyValue is actually the primary id of the schoolrequest table(SLid).

Any ideas?

Thanks,
M