I'm not sure why you are asking this question on a forum that deals with problems with the intenret and networking., but you will not likely get a useful answer unless you can provide the model of the "Old Dell" computer. With the model, we can direct you to the online users guide or service manual.
Please edit your post and remove the serial number. It is against forum rules to post this on the forums and if the moderator's see it they will remove your post and perhaps the whole thread. The model of the computer you are asking about is an Optiplex - GX110 (which you should have been able to read off the front of the case).
The Service Manual for this model is at:
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You will have to know which of the form factors you have, then follow the instructions for the appropriate form factor.
You may also find the User Guide for this model to be helpful:
volcano11
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September 30th, 2007 22:00
Preacherman9
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September 30th, 2007 22:00
volcano11
2 Intern
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28K Posts
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September 30th, 2007 23:00
<ADMIN NOTE: Broken link has been removed from this post by Dell>