Yes you can. Addons for Opera include, AdBlocker, AdBlocker Plus, and Ghostery -all of which are excellent for disabling annoying ads and popups.
Great thanks for the info will check it out
Im using Chrome and I tell ya, its not that bad..it takes some time getting used to because Im so used to firefox but I sent all of my bookmarked pages from firefox to Chrome and it looks the same, in fact with Chrome it loads even faster and I installed Adblock too :-)
is there a way for me to make the tabs for the pages larger or is that the standard size(The tabs on the top of the page) Im used to it being larger