Visas and border crossings forum

Hi.
Planning on getting a Thai visa at the embassy in Phnom Penh, and as I reviewed the list of required documents, some of them got me a bit confused.

According to this page: http://www.mfa.go.th/web/2501.php?&id=2815
the required documents for tourist visa are:

1. One completed and signed application form -- Check
2. One photo (colour, size 4 x 6 cm) -- Ok, no problem
3. Passport (valid for no less than 6 months) -- Sure thing
4. Copy of ID card -- Of course
5. Copy of residence certificate (Carnet de Residence/ Family Record Book) -- A whatnow?

6.x -- really?? This sounds more like for work visas?
6.1 Company employee must prepare company work certificate
6.2 Self-employed applicant must prepare business registration/license (original)
6.3 Student must prepare guarantee letter from university or student card
(Copy of parent’s ID card and proof of parent’s profession)
6.4 Pensioner must prepare bank statement or pension fund
7. Hotel reservation in Thailand with name and dates of checking in/outAirline ticket or confirmation slip with flight number and date of entry/exit -- Sure, ok

Most of these are pretty straightforward, but #5 and #6 are a bit confusing.
Are you really required to provide "Residence certificate" and "work certificate"?

Anyone who applied for a Tourist visa at the embassy has any experice here?

I guess it's always better to be safe than sorry, but I don't even know how to get a "residence certificate".. And I'm not sure what kind of work certificate they are refering to..

Ps. I'm Swedish, and thusly applicable for the visa on arrival, but since I'm arriving into thailand overland I need more than 15 days.
Thanks,
Kristoffer