help on avi problem

Attachment 16981

hi all,
i'm completely dumb here.
i have photoshop and VLC player installed in my PC, and i'm going well with that (i mean no problem between each other).
until last month i downloaded movie part file from Mediafire.
usually nothing is wrong with that. after all parts is finished, then i'll just play the first part using my VLC player then automatically the player reads all.

but now i think something is wrong.
i often use both programs, and my photoshop file's icon is symbolized VLC logo (i think it's because VLC reads both extention .psd and. avi or vice versa).
now if i download movie, all the file extention is .psd (1 part is around 100MB)
i really don't think those are photoshop file.
if i play with my VLC player (which i used to be), now it can only reads the first part eventhough i have downloaded all parts.

i tried several ways, like changing the extention from ".psd" to ".avi.001" and start joining using Hjsplit but none of them are working. so did Total Video Converter.
the only way i have not try yet is re-installing the program.
but i do think there is reasonable answer from you guys, the Guru out there, about this matter.

thanks!

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