Hello everybody!!! I finally discovered how to add more shoes in the shoes.fsh in the xplrcm.viv. I wanna share this to all of you so here's a simple tutorial:
Editors Needed:
1. EaGraph
2. nFSHTOOL version 1.22
   you can download it here --> 
http://go.to/nba2kstuff,   
                                              
http://nba2kstuff.nba-live.net
3. Decimal to Hex Converter
   you can go to this site: 
http://www.iboost.com/tools/number.htm
Steps:
1. Open your EaGraph editor then extract the shoes.fsh from the  
    xplrcm.viv file on your desktop or wherever you want it to extract.
2. Open the shoes.fsh file using the nFSHTOOL (For more details on how  
    to open the file using the tool, please refer to the readme that  comes   
    with it)
    When you open the the shoes.fsh using the nFSHTOOL, a folder named 
    shoes will be created. The contents of the folder are the bitmap images 
    of the shoes and an index.fsh file.
3. As an example, copy files 0051-0.bmp, 0051-1.bmp, 0051-2.bmp then
    paste it somewhere else then rename the files respectively to 
    0052-0.bmp, 0052-1.bmp, 0052-2.bmp. Put the new files back to the     
    shoes folder.
4. Open the index.fsh with a notepad then you will see these:
    
    NFSHTool generated file -- be very careful when editing
    D:\NbaLive2003Patches\ShoeAddition\shoes.fsh
    FSH
    SHPI 52 objects, tag G346 (by default, the num of objects is 52.  
                                            change this number depending on how  
                                            many shoes you will add. for this example,
                                            change it to 53 because we just added one  
                                            shoe)
    BUFSZ 1587216 (Please refer to the readme file that comes with the 
                             tool on how to change the buffer size. if you only add
                             a few shoes, i think this buffer size is enough)
    NOGLOBPAL
    sh01 0000-%d.BMP
    MBP+2 60 x2 128 128 {0 0 0}
    ETXT 70 sh01%00%00%00%00%00%00%00%00
    TXT 6F 66 0
    ,MAX:DXT1|0,16|0,HIGH:DXT1|0,16|0,MED:DXT1|1,16|1,LOW:DXT1|2,     16|2%00
    !PAD 6 000000000000
    .
    .
    .
   sh34 0051-%d.BMP
   MBP+2 60 x2 128 128 {0 0 0}
   ETXT 70 sh34%00%00%00%00%00%00%00%00
   TXT 6F 66 0
   ,MAX:DXT1|0,16|0,HIGH:DXT1|0,16|0,MED:DXT1|1,16|1,LOW:DXT1|2,1   6|2%00
   !PAD 6 000000000000
   (INSERT HERE)
   (Example:
   sh35 0052-%d.BMP           <---Changed this line
   MBP+2 60 x2 128 128 {0 0 0}
   ETXT 70 sh35%00%00%00%00%00%00%00%00  <---Changed this line
   TXT 6F 66 0
   ,MAX:DXT1|0,16|0,HIGH:DXT1|0,16|0,MED:DXT1|1,16|1,LOW:DXT1|2,1   6|2%00
   !PAD 6 000000000000)
   (Please observe the changes I made.)
   #END
   Save the index.fsh
5. Now you have to open the index.fsh file again but u should use the   
    nFSHTOOL to open it.
    After doing this, your previous shoes.fsh will be overwritten and now 
    will have 53 shoes instead of the default 52 when you open it using 
    EaGraph. Just change the added shoes with the import wizard
    That's all folks!!! Just add any number of shoes want using  the steps  
    above. I hope this helps, especially to those who can't use   
    the customart 1 because of slow loading times.
    By the way, thanks pala MJ for telling me that this is possible. I just got 
    curious on how to do it. 
 
 
    I also want to thank all the creators of the graphic editors!!!
    Ciao!