Unsure about subdomains

Hi; I have a domain (abc.com). I use my registrar's nameservers (I cannot change this), and have created A records for my domain:

Nameservers:
ns1.ozregistrar.com
ns2.ozregistrar.com

A record:
www.abc.com --> 202.111.222.333 (my server)

In ISPConfig, everything works fine for my domain: when I type www.abc.com into my browser, I get straight to my home page.

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HOWEVER, I need to create independent subdomains (with associated email addresses) that point as follows:

www.123.abc.com --> http://www.google.com
www.456.abc.com --> http://www.yahoo.com

AND

[email protected] --> [email protected]
[email protected] --> [email protected]

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I have checked the forums, and tried to follow instructions, but I have had no success. Can someone help me out, please? I would be grateful for *explicit* instructions.

I would like to create the subdomains on ISPConfig (not with my registrar).

Thankyou for your help.
HMK
Australia.

 

Message reposted in correct forum

Sorry, I've just realised that this request is in the wrong forum. I'll repost.