I filled up the form online and submitted it online as well using the e-consular. I think it's only available for Malaysian. So since your wife is Malaysian, I'd advise her to do the same. Then I submitted it in person to KLN Sarawak branch (recently made available in Sarawak, thank god! hate to fly to Putrajaya just to do this - flying to Kuching was bad enough).
Have the following ready if you are submitting in person:
1. 2 copies of IC - certified by commissioner of oath
2. 2 copied of Passport - certified by commissioner of oath
3. 2 copied of Passport Size photos
4. 2 copies of the Application Form (as submitted on line -make sure u print out 2 copy before u click enter to submit)
5. 2 copies of Statutory Declaration that u have never been charged in court or have been etc (sample from the website as well) - certified by Commissioner of Oath as well
6. RM20/- cash or Bank Draft payable to Akauntan Negara Malaysia
7. Prepare an poslaju or pos ekspress return envelope with your address
I thought when you submit online, then submit the supporting documents in person, you will get it immediately (as in website they state same day or latest 1 day unless you are from US, Spain, Singapore, France and Papua New guinea), They told me to come back the next day and to give them a returned address prepaid envelope and they will mail it. Luckily there was a post office kiosk beneath the building. Bought the Pos Ekspress prepaid envelope. Did it on Friday 3rd June 2011 and received it the following week.
You can also submit all of the above via mail with a returned envelope but you still have to submit online as well.
Goodluck! At least you don't have to obtained police fingerprints to supply to Australian Police for PCC, now that's a whole other nightmare. Happy to share if anyone needs to that as well.