Data Entry Through Two Forms

Hi,

as many of us here, I'm new to Access...:o And running in some problems. Here's my biggest one:
I'm trying to set-up a sample managment system for a laborory. I have two forms linked to two tables.
Form1/Table 1 (just the interesting fields)
Sample ID
Lab ID
Date

Form2/Table 2
Sample ID
Names of the required tests (with yes/no checkboxes).

What I'm trying to do is to display Form1, let the user fill in the data, click on a button. Then Form2 should show up, sample id filled in from the previous form. I couldn't find a way to do so.
Using sub forms wouldn't help me, because from the second form I need to add more forms for additional info.
I tried to ovecome the problem by adding a filter when the second form opens. But of course there's no record with that sample ID, yet (they are uniq ID's).

I suppose there's a solution for this question. Could you point me to the right direction?

Thanks!