Hi!
There are 2 ways to convert your cassette to CD.
You can either buy a stand-alone audio CD recorder, from companies such as Sony or Teac. (Search on http://www.ebay.com/ )Connect you tape deck directly to the audio CD recorder, hit ‘Play’, and record directly onto blank CD’s .Some say they offer automatic track detection, which creates a new track on the CD each time it hears an interval of silence; in practice, this technology can be flaky. If you want the CD to recognize each song as a separate track, you’ll usually wind up baby-sitting the entire process and hitting a ‘New Track’ button at the end of each song.
(If you do decide to buy a separate recorder, here's an article on how to use a Teac. turnatable
http://www.nytimes.com/2006/08/17/technology/17pogue.html?ex=1313467200&en=c2750ad818bbd966&ei=5088&partner=rssnyt&emc=rss)
If you have computer, you can connect your tape deck directly to it. The cable you need has stereo RCA jacks (round red and white) that plug into the tape deck’s stereo output, and a headphone style mini-plug for the audio input jack for your Mac or PC.
Next, equip your computer with some recording software. Free programs abound, like MusicMatch or Audacity .
Download Audacity from http://audacity.sourceforge.net/?lang=en
Visit your computer’s sound control panels or the options screen in you recoding software, to make sure that it is ‘listening’ to the correct audio input (and not, for example, it’s microphone jack). Once you’ve set the volume levels, press ‘Play’ on you tape deck and ‘Record’ in the recording software. If you save each song as separate file on your hard drive, you’ll be all set to turn them into traditional tracks on the finished CD. This entails stopping the tape after every song and exporting the file before continuing.
Once a song has safely arrived on your hard drive, you can export it – in AIFF or WAV format, for example – and then import it into a program like iTunes or Windows Media Player for burning to a blank CD.
If you want more step-by-step details on this process , browse through the following links. You may find them useful.
http://www.andybrain.com/archive/convert-cassette-to-cd-digital.htm
http://web.singnet.com.sg/~lion4/articles/diy/cassette.html
http://www.webtechgeek.com/How-to-Burn-Copy-a-Cassette-or-LP-to-CDR.htm
http://www.infopackets.com/channels/en/windows/gazette/2005/20050519_convert_mp3_audio_cd_to_cassette.htm
I hope that helps. Best of luck