It is easy to do.
I would resize mine before uploading.

How to edit images for uploading.
Digital cameras are becoming better and more popular all the time and can take some terrific photos and often we want other people to enjoy the pictures too. Unfortunately the pictures as they come out of most digital cameras are not very suitable for sharing online. Those 4, 6, 8 or higher megapixel cameras have terrific detail and can create some great prints but produce files far to large for general use online. A common 4 megapixel photo creates a file larger than 2200x1700, a good size for sharing online, especially on forums, is 640x480 or less. At that size there is enough resolution to appreciate most photos and still easily fit on most web pages and won’t take forever for people without broadband to download. Of course this will also vary depending on the subject of the photo. A single cartridge wouldn’t need to be anywhere near as large as a panorama of the Grand Canyon.
While editing and resizing your photos might seem intimidating until you’ve done it a time or two, with the right software it’s very easy to do. Fortunately there are many programs that make resizing your images very easy, you probably have one that came with you camera or scanner. If not there are many you can download. Some free, some with a free trial. Here are a few that I’ve used, this is not an exhaustive list by any means, there are hundreds if not thousands of free or inexpensive image editors available today, along with some very expensive software packages.
Free image editors:
GIMP
http://gimp-win.sourceforge.net/stable.htmlcompletely free and full featured with both Windows and Linux versions available. This program will do pretty much anything you need to do with an image editor. It’s not the easiest program to learn, it has a fairly steep learning curve but it does work well. If you’re using Linux this is possibly the best image editor available.
irfanview
http://www.irfanview.com/is another free program, very small, only a 884 k download. This doesn’t have as many features as the larger programs, but is VERY fast. If you just need a basic editor to resize and flip or rotate your pictures this is a good choice.
Paint.NET
http://www.getpaint.net/index.html100% free and open source like GIMP. This is a very full featured and easy to use editor. I used Paint.NET to edit all of the images later in this article.
PIXSIZER
http://bluefive.pair.com/PIXresizer is a tool for quickly generating screen-friendly versions of your images with dramatically reduced file sizes. It is a photo resizing program that enables you to quickly resize one file or a selection of image files for use on the web and in e-mail. The reduced files are saved in a different directory, so your original pictures are not changed.
The program offers several different resizing methods to choose from and can automatically recognize image sizes to calculate the best fit. PIXresizer includes a built-in image viewer and you can also convert between graphics formats: it opens and saves in .bmp, .gif, .jpg, .png, and .tif formats. A great companion for webmasters and digital photographers.
Thanks James,
