Finding them on the GSA website can be rather frustrating.
Here is the path from their home page to the GSA Schedule Solicitations page where you will find links to each of the GSA Schedules: Home > About GSA > Acquisition Solutions > Schedules > For Vendors - Getting on Schedule > GSA Schedule Solicitations . I have provided the full path so that you can see what directory the GSA lists this information under.
You will need click on the last link: GSA Schedule Solicitations to find your particular schedule.
To download the solicitation, you will need to click on the solicitation link and not the schedule link. This can be found in the middle column and is a series of letters, numbers and dashes such as: 7FCI-L3-03-0084-B.
The solicitation page should have the solicitation number listed just below the corresponding schedule. Here you will need to download all of the files that relate to your products. I would recommend downloading the very first file and reading it first. It is usually titled All-Read Me First for some reason.
The READ ME file will guide you in selecting the appropriate files to download for your specific offer.
If you are still unclear on which files you need to download and prepare, contact the contracting officer listed at the top of the solicitation page. The contracting officer's name, phone number and email are all listed in the box under the solicitation number at the top of the page.
There is often more than one contracting officer for a solicitation that you can contact. I would recommend emailing all of them if you cannot reach any of them by phone.
Once you have downloaded the appropriate files, I would highly advise you to do as the GSA recommends and print all of the files out and organize them in a three ring binder with dividers.
You might be inclined to skip this step because of the number of pages you will have to print, but trust me here. You will thank me for this advice later. It is much easier to keep track of your revisions by marking it on paper than it will be in digital form.
I also recommend placing a sticky note next to each of the revisions you make so that it will be easier to find later. The revisions that I'm talking about take place after you have submitted you completed solicitation to your contracting officer.
In the process of completing and receiving our GSA contract award, we were required to make around a hundred different revisions. As your contracting officer makes these requests, you have to revise each part that is required and then fax it back to the officer within a specific time frame(usually around 5 days). So, go ahead and print it all out and organize it in a binder. The more organized you are, the easier this will be.