Overclocking n00b with Overclockable CPU

[deadcell]

Ok yesterday I bought the following from overclockers

Abit AW8 Intel 955X (Socket 775) PCI-Express Motherboard (MB-083-AB)

(http://www.overclockers.co.uk/acatalog/Online_Catalogue_This_Week_Only_25.html)
Top Mobo

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Intel Pentium 4 805 Dual Core "LGA775 Smithfield" 2.66GHz (533FSB) - Retail (CP-116-IN)
(http://www.overclockers.co.uk/acatalog/Intel_Dual_Core.html#acp_2d116_2din)

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Crucial 1GB (2x512MB) DDR2 PC2-4200C4 Dual Channel Kit (CT2KIT6464AA53E) (MY-081-CR)
(http://www.overclockers.co.uk/acatalog/Crucial_DDR2_STD_Kits.html)


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Can someone tell me where to start with overclocking? Im a complete noob to these things.

Currently my system hits 50 degree under load... is it safe to OC it?

Thanks

 

[deadcell]

woops sorry changed

 

[deadcell]

Should I clock the RAM as well?

 

[deadcell]

Worth buyin another gig of same brand, or scrap the slow ram and buy 1 gig of fast stuff?

 

[deadcell]

Its only a day old, would I be able to return it and buy the 2gb? Dont supose u know the returns policy as well?

thanks