Maybe some hardware head will jump in and give you better advice, but I searched that sticker number and Google didn't find a match, leading me to believe it's a part number or something, but not a significant descriptor of the memory type.
Putting in the HP type you provide does return PC2700 references, including these top hits - top in positioning, no comment on quality of choice:http://www.amazon.com/Ultra-1024MB-PC2700-333MHz-SODIMM/dp/B0006SWJ6Ohttp://www.amazon.com/Crucial-Technology-CT12864X335-Unbuffered-Non-ECC/dp/B0002VAQR4/ref=pd_cp_e_0
You will be able to scrutinize the photo to see if these RAM modules, which DO match your listed spec, ALSO match the appearance of what you currently have installed. If so, I'd say that provides a reasonable confidence they are suitable.
As to vendors and actual RAM manufacturers, I dropped "genuine" Samsung RAM into my MacBookPro - matching what Apple actually uses, but beating their price by quite a margin, and choosing that brand "made me happy."
If you're willing to search and read, and need further reassurance, try a search phrase such as:
what is the best RAM
who makes the best RAM
and see what comes up. You'll probably find opinions based upon experiences where someone upgraded their memory and the computer did not smoke when restarted. As far as actual MTBF and timing specs go, good luck finding a definitive answer. I see nothing in the two items I linked above that causes me any concern at all.
One last vendor comment some friends and I have all had good luck with and service from Newegg lately, but that's another absence-of-smoke opinion.