Modifying your cards in Full Tilt has changed recently. Many people had their previous card mods rendered useless when Full Tilt updated their software in early July 2009. However, it did not take long for players and "modders" to figure out once again how to customize the poker client. If you have never tried modified cards at Full Tilt, it really is worth the time it takes. It is especially helpful for people playing multiple tables. Overall, many of the mods are just plain more enjoyable to look at.
The main difference in the new Full Tilt cards versus the old is the file format. Full Tilt now uses an SVG format for its graphics, so all of the old graphics and modifications need to be replaced with the new format. The process of actually replacing the cards is not very difficult, but many of the mods are still a work in process and may need to be updated. So here is how it's done.
First, you need to find a card mod you like. I will be using this one.

All of the mods follow the same basic process.
The first thing you should do is close your Full Tilt program. Then go to wherever your Full Tilt Poker client is located and back up the original cards just for safety. Usually it will be something along the lines of C:>>Program Files>> Full Tilt Poker>> Graphics>> New Table>> Common . Once you open the Common folder you can right click on the Cards folder and copy and paste it to a new folder. For convenience, you could name the new folder something like Original Cards.

Now download the card file you chose and unzip the file. You will then have a folder called Cards saved wherever you save your unzipped files. Don’t save it to your Full Tilt folder.

From here you need to right click on the new Cards folder and select Cut (or Copy). Then, once again point to the location of your Full Tilt program, C:>> Program Files>> Full Tilt Poker>> Graphics>> New Table. This time, do not open the Common folder. Instead, right click on it and select paste.

Your computer should then tell you that there is already a folder called "Cards" and ask if would you like to overwrite this folder or replace all of the contents. Select "Yes to all" or something similar, depending on your computer, to overwrite all of the files. Once this is done, you can open up the Full Tilt Poker client. Your new cards should now be the default cards on your tables. Be aware that if only some of the cards appear to be the new ones that you may need to either select or de-select "Four Color Cards" from the Options menu. This will depend on which card deck you have chosen to install.

Finally, most, but not all cards will have new card backs included with them. To change this, again go to Options and select the Misc tab. Here you can choose which card backs you would like to use.
Here is a picture of the standard table with modified cards.

As you can see, the cards are a nice change, but they don't necessarily go well with the standard table. For best results, find a new table modification to use. Usually a nice dark table will look great with bright colored card mods. You can find more information on table mods in the Full Tilt Poker section of FTR. Almost everything from the cards to the tables, to the backgrounds, buttons, and chips can be changed in Full Tilt. Be sure to check the Full Tilt Section of FTR for more information on all of these mods and a whole lot more.