Things i am going to get for my Laptop

hi well i am getting some ram and more internal memory so i am wondering wether
these two would work on a u300 toshiba satellite laptop:

[ame=http://www.amazon.co.uk/exec/obidos/ASIN/B000Q76LBY/ref=pd_luc_mri?_encoding=UTF8&m=A2BTWY01498E2U]Corsair 2GB DDR2 667MHz/PC2 5300 SODIMM Laptop Memory: Amazon.co.uk: Electronics & Photo[/ame] X2
[ame=http://www.amazon.co.uk/Seagate-Momentus-7200-4-7200rpm-Internal/dp/B002H9XAY0/ref=sr_1_7?ie=UTF8&qid=1250170435&sr=8-7]Seagate Momentus 7200.4 Laptop 2.5 inch Hard Disk Drive: Amazon.co.uk: Electronics & Photo[/ame]
so would these work?

TGSoldier said:

Apparently you don't trust me... or maybe you just want more opinions, either way;for the third time, they will work. :)

Remember to buy 2 Corsair 2GB DDR2 667MHz/PC2 5300 SODIMM Laptop Memory: Amazon.co.uk: Electronics & Photo

I just want more opinions, i'm not trying to offend, so i will get these and get my techy to install it, OR if some1 is really nice give me instructions to install them, oh and btw can i install the disk drive and keep the current one or is it one per comp?

EDIT:
on the Motherboard of the Satellite u300s how many empty ram slots is there, because if its 2 i will keep my current RAM increasing it to 6GB! and install windows vista ultimate x64 bit with 7 and ill get XP to tri boot and make it awesome , 100 gb space for xp 150gb for 7 and 250gb for vista

aww, but nvm still 4bg is good and when u say externally does that mean i can use an internal one get an enclosure and still use it like an internal?

so u could put an OS on it and it would dual boot?

Sure they would have them both with zero problems

Ken