I've set up Google apps for my domain: I've registered the domain with Google by adding the CNAME Google asked and I've apparently succesfully setup the MX Google mail servers.

So far I haven't yet a dedicated server: I'm just having a domain at a registrar.

Now I want to activate SPF and I'm confused. In the following short webpage:

http://www.google.com/support/a/bin/answer.py?answer=178723

it is written that I must add a TXT record containing:

v=spf1 include:_spf.google.com ~all 

Where should I enter this? Should this go in the zone (?) file, like I did for the CNAME and the MX records?

So far I have something like this:

@ 10800 IN A 217.42.42.42
@ 10800 IN MX 5 ASPMX3.GOOGLEMAIL.COM. 
@ 10800 IN MX 5 ASPMX2.GOOGLEMAIL.COM. 
@ 10800 IN MX 3 ALT2.ASPMX.L.GOOGLE.COM. 
@ 10800 IN MX 3 ALT1.ASPMX.L.GOOGLE.COM. 
@ 10800 IN MX 1 ASPMX.L.GOOGLE.COM. 
google8a70835987f31e34 10800 IN CNAME google.com. 

Does adding the SPF TXT record mean I should literally have something like that:

@ 10800 IN A 217.42.42.42
@ 10800 IN MX 5 ASPMX3.GOOGLEMAIL.COM. 
@ 10800 IN MX 5 ASPMX2.GOOGLEMAIL.COM.
@ 3600 IN TXT "v=spf1 include:_spf.google.com ~all" 
@ 10800 IN MX 3 ALT2.ASPMX.L.GOOGLE.COM. 
@ 10800 IN MX 3 ALT1.ASPMX.L.GOOGLE.COM. 
@ 10800 IN MX 1 ASPMX.L.GOOGLE.COM. 
google8a70835987f31e34 10800 IN CNAME google.com.

I made that one up and included right in the middle to show how confused I am. What I'd like to know is the exact syntax and where/how I should put this TXT record.