Help...writing successful, CD doesnt work

ok i selected a few files, then i send to CD-RW drive, insert blank CD, click write these files to cd…
after writing the files onto CD, all error free, i tried the CD again and i cant even open it, also it says it only used up 9.38 megs

i wasted 3 CDs like this and all have the same problem, i even tried different brands

any suggestions???

btw i just use the XP built in CD writing option…and it worked perfectly before about 3 months ago

it might be helpful to know what software you are using.

perhapse you didn’t close the session

somehow i hate to write data this way… i prefer creating a data cd via nero.