When dealing with Infopath forms and Sharepoint (well even if you don't use Sharepoint), there are mainly two problems. Well a problem and a nuisance.
If you just want to see a form content you have to have Infopath installed, even if you have infopath installed it's a nuisance to wait for infopath to load just to see the form content, for one form this is not very problematic, if you have to see a lot of forms it can can quickly become a real drag.
Two days ago i was given a demo of a soon to be released product that will ease the pain, and allow you to see the form content even if you don't have Infopath installed.
The product is neatly integrated with Sharepoint (both Portal Server and Windows Sharepoint Services), and allows you to quickly see a form content, without having Infopath installed.
The product is localized in 15 languages (or a number very near 15), including chinese, arabic languages and hebrew, it's a breeze to install and configure and it's a real bargain.
You can find more information about Cave Digital Infopath Web Previewer here (including screen shots).
Apparently Office 12 (i haven't seen any announced dates, and this information is still a little vague), will have the capabilities to fill out forms using only a browser, but until then i think this product will be a great fit.
But don't take my word for it try the product.
P.S Just noticed Patrick, is also recommending it, his recommendation is worth a lot more than mine. :-)