Hi Wendilla,
There are two ways to do this, one is by using a hi-fi type cd recorder and the other is by using a pc.
Depending on the type of connectors on the tape deck you can plug it into a hi-fi using phono leads and use a cd recorder such as this to record onto. �199 from richer sounds
http://www.richersounds.com/showproduct.php?cd a=showproduct&pid=SONY-RCDW100-BLK
Second method, connect the audio out to the audio in on your pc sound card (most use 3.5mm jacks but some use phono plugs you will need to check the back of the pc)
Next using audio recording software such as Audacity (which is free to download and use) start recording then save each track onto the hard drive. When you've done burn onto a cd using Nero or similar. You should make an audio cd if you want to play it back on audio equipment rather than an mp3 (data) cd.
Connection help here with pictures
http://www.polderbits.com/HowToConnect.htm
This is an excellent article but sadly no pictures its part one of five.
http://www.telegraph.co.uk/connected/main.jhtm l?xml=/connected/2006/11/14/ecrboot14.xml